Help me make a Death Knight Build (Lich path)

[Zeption™]

so im going with Lich path and i wanted to do a Death Knight being with Horse or without it
but going for the theme of Death Knight witch means that the following is a MUST
-Heavy Armor
-Melee Weapon
-Summon Spooky Scary Skeletons (some, although champion skeleton may be fine too)
-some Level of Death magic aside of skeletons

i need suggestion of class combinations to make it possible not just to be able to fight in melee but to be able to cast spells too, also stats pls im not sure if maxing out STR or Dex i think STR may be better since its having heavy armor on and Dex Mod would conflict with it

i thought of going
Wizard -> Hellknight Signifer(10) -> Hellknight (2)
but not entirely sure i'm not soo good making builds

Node: i try to go wizard because you can combine the Mythic Lich Book with the wizard one making one BIG BOOK as it gets bonus from caster class and lich class

i also read somewhere that once you become lich form your CON bonus goes to CHA? not entirely sure of this never reached Lich form atleast not yet im currently mytic lvl 3 so just 1 level on lich at the moment

[AlexnChaos]

Undead don't have Con Scores, they use Cha instead so that makes sense

[AxE]

Definitely gotta make the build around the "Power from Death" spell.
I think it gives OP bonuses for a level 3 spell (bonuses + haste). So the more you kill, the more death is around you the mightier you get.

[Ostrava of Boletaria]

https://www.neoseeker.com/pathfinder-wrath-of-the-righteous/builds/Main_Character

The first build in this list basically fulfills what you want it to. Keep in mind that default lich already gives you a bunch of death magic-y stuff so it will be pretty hard to play a lich/death knight without feeling like it's fulfilling the class fantasy lol

Also, wep choice is up to you but I recommend you pick a weapon that has a decent threat range. Falchion for example is a really solid and safe choice but idk if that aesthetic would appeal to you.