I just recently pulled warca which I’m ok with but I also have a super epic with assisted wave subzeratops I believe is his name. Would it be a good idea to run them both in a water starting lineup? Any answers are greatly appreciated 
Yes, and if you lead with warca as he’s tanky, you can lead your AW setup into a bloodthirst setup when Novablast goes off.
assisted water is powerful but with warca there is the assisted water lineup you can go with or the one on one / nova blast set up. I would try something like this - warca frostrider gearcroc subzerarops. Use one on one with frost rider then switch places and have a water monster with purify come in then use stealth with warca and when the enemy team wakes up they will only have 80 seconds roughly to kill warca before he can use nova blast. If you don’t get one on one off or the enemy gets purified then you can just use assisted water moveset
Problem with this is knockback.
Only if it’s parasardon or Remus. And if you put atlanteon in 5th, you can just continue the AW, if you also lead with Seahowl, you can switch places back into Cryo as well.
I use this with Warca, Sub and Hydrowyrm, but only to sweep early on in events or for any of the ultra-evolve missions. Plenty of better tactics to base around Warca than going for an Assisted Wave move that takes you out of the game for 250s.
Warca, Mecha, Cryo, Seahowl is a deadly frontline, but is vulnerable to sleep and is slow. Replacing Warca with Abyss, which is much faster, gives better strat coverage and gives you an easy sleep bomb setup after you wipe their frontline. However you lose the bloodthirst and Novablast that way.