I assume when you say wild bettas, you are talking about wild Betta splendens?
I am someone who recommends species only set-ups for wild bettas. While it is possible (if your water conditions are suitable) to house females of the splendens complex within a sorority of 'domesticated' female bettas, they are most likely not going to show off their best colours.
I had a couple of female imbellis in a sorority tank for a while and they tended to get beaten up or chased off by the rowdier female bettas.
Wild bettas also tend to prefer water that is soft-neutral, so if your water is extremely hard you may find that the fish are not as adaptable as normal splendens are.