Hi, first of all congratulations for the great collection... It will give you the flexibility and the possibility to build several different lists. TK is my main army. It takes time to get used to their stategies but I think they can give you a huge satisfaction once you start to know how they work.
1) In each list I would always select the casket of souls. I think you know why...
2) a Level 4 is a must. our lore seems to be not that great but if used properly it helps a lot to boost our troops and not only. A special charaxter I like to play is Khatep He is reliable and He knows all the lore. Arkhan also is a great choise!
3) Some are playing a second Level 4 high priest lore of light Generally I don't like to invest so many points in magic. Dices are limited.... but you can try it out...
4) you can also play 2 o 3 liche Priests lore of light The purpose is to maximise Banishment spell. ( not my cup of tea) but lot of players are playing Tk in this way.
5)Hierotitan I love this giant His spells can be handy .Specially his burning gaze and his bonus for me is really important. I always play him together with the casket. He can be also a bodyguard of a unit. Useful for his stomping attack... flank charging ...and so on
so you can decide to invest a lot in magic...or maybe go for a shooting list ( always supported with the NK lore) Here Khalida is shining But you need a big unit of archers to maximise her bonus. + 2 Catapult and use several chaff units to slow down the enemy Some units are fast and we need to buy as much time as we can. I would also use 2 stalkers units. They are useful vs Monster ..War machines and they can come up from the sand and shooting in the same turn.
If you want to try necronights I think you should use 2 units ( 2 x 5 or 6) Lore of light is a great support for them But their large base is sometimes a problem if you don't play in a open field. I like them .The have the best Armour save ( 3+) ( Some players are Using them with Rhamothep ...for rerolling the AS. In this case you should avoid other costructs in your list ...)
Chariots are useful...but I think a unit should be 3 or max 4 I used to play in the beginning a "very fast" list but you lose very easily the rank for the bonus to impact hits and once they stuck in combat they are performing not so good.( even with a prince or Tk )
I know all the lore and rerolling a dice is priceless
( you can add a liche lev 1 for the dispel scroll)
1 Unit of 37 -38 archers horde formation with khatep and a TK ( or prince) not so easy to remove this unit with their WS 5 /6 and Regen 6+
khatep has to try always to cast x2 shooting spell on the unit.
it's a great Bunker
( Hierotitan is near to bodyguard the unit...and to give the bonus to Khatep)
1 warsphinx ....( is for target saturation and for giving us a great support in fighting ) Opponwnt has to decide where to focus WM fire Hierotitan? casket? Sphinx?.... Generally he cannot kill everything in time
1 big unit of skeleton warriors ( 60 to 70) Horde formation TK general and necrotect Ws 6+ plus hatred is cool But this is not the point this unit without magic support will not win so many fights but it will be very difficult to remove from the table. WIth magical support....eheheh You can be surprised. If you debuff the enemy ( Nehek -D3 Toughness) they can really do something for you with bonus such as killing blow ....or +1 attack ( Ptra 's incantation)
TK is the general and with the necrotect is in the 58 Warriors block. This Unit is generally deployed in the middle of the Battlefield
The Tomb King has WS4+ and Blade of Antarhak...( this magic weapon maybe is not that great but In some occasions it worked out very well) Ironcurse is important in order to provide a WS 6+ to this big Unit vs Warmachine
Ushabti are deployed very near to warriors ( remember what I told you about the necrotect .....) they can be also far from our spells' range but it doesn't matter ...they are relieable enough....even without magical support.
on one side of our warriors ...we should deploy our archers.... Khatep has to support mainly this 2 units ( archers and warriors) !!!
On our archers side we want our Hierotitan to support Khatep in the magic phase and bodyguard the archers unit You can use it even as a "chaff" in some cases.
WARNING ...never use him as flank charger in melee where skeletons are involved. He will crumble always.....!!!!!!!!!! ( same for sphinx...!!!!!) do it only in the rare case you are almost sure that you are going to win the fight.
Sphinx is supporting the unit of ushabti ...fiery roar is great. Ushabti +Sphinx are our elite in the list and we need to use them together !
casket deployed somewhwere behind ...on a flank ( remember not so near your units)
chariots generally on a flank ( it depends....on where you think you need them) I prefer to keep them on the Khatep 's unit flank.