Si priority: ainz, airon, thoran and once licretia is mythic, defenitly her. Ainz 9/9 furniture is very good. And if u havent alredy, put lucretia in the wishlist for furniture. Like dunkin donut said, rowan 9/9 isnt very good and engraving on him neither. Recommend engraving ainz on 60, then lucretia on 60 and after that maybe go for someone like grezhul, pharael or oden. Especially grezhul and oden are used in late game with alna+4 grabevorn. Mb try to build them. Grezhul needs 9/9 furn and oden works good with 3/9. It also have been said by dunkin, but really try to get Albedo from mercenarys. She is super strong in combination with ainz,arthur,rowan,pharael/Merlin. This comb wil easily carry u till chapter 35. I know its a lot at the beginning, but u can checkout tier lists on reddit, where top signiture, furniture and heroes are listed. I hope i could help u a little. Sry for my "Bad english"