So do you think a 30 gallon would definitley suffice for either a male or female? Also, would you recommend having a 50/50 setup or would the standard giant water bowl work just as well? I wanna be able to make him/her as happy as possible
A 30 should be fine. You can do a 50/50 if you'll put the work in to maintain it . A water dish is easier.
If you do a 50/50, make sure to have a shallow part and a deep part, as sometimes the like to completely submerge themselves.