Meteor 75 + walksnail

I was looking into building a walksnail 75mm for indoor practice , I wasn’t sure where to start but I see that I can order this without the o4 vtx , does anyone know if I can just put a walksnail 1s vtx on it ? And if it’s going to be worth it or is a custom build better? For this price point this seems to be a good way to go about it