Soulstone investments

Sup guys, I have 3 unpolished soulstones sitting around, with the following investment options, I have valara a1, count dracula a1 and then cainan.

My question is, what do yall think would deliver the most overall value? I was thinking from the first two I'll take one to a3 and save the extra soulstone, then that can maybe a1 cainan. Another option is, all 3 into cainan?

What would be the best strat? And between count and valara is i need to invest 2 into either of those, which one?

I could also wait and see what happens to chaotics after jez's release? Or even see what happens on those banners first. If my non ancient pity yields gretchen that A1 might also be worth something but likely not as much as valara a3 or the fact that we have no gurranteed third rerun of count?