I see it going either one way out of two (maybe):
1) he’ll identify the other sisters first, which may surprise them (and bait readers into thinking farm route) with Fuuts ending up saying something along the lines that he loves everyone like family but lastly will say his love for Yots is more
Or
2) he purposely picks another bride to mess with Yotsuba and the rest, only to then pick Yotsuba easily and give her the famous Fuuts smirk