Hey! Sound Designer here! Im new to the industry too, but i have a bit of knowledge about it.
It really depends what how much time u have and how experienced your team is. Most of the game jams are 48 hours and most of the teams choose to do a 2D game. Pre programmed Wwise scripts dont work with 2D games u need to do new scripts for everything. About game engine, I saw few projects made with Unreal, most are made in Unity.
About the DAWs and softwares used its up to u to be honest. Remember game jams are to be fun and to make new connections, and show a bit of your work so dont be afraid to join in even if u dont know how it works properly!
Sorry for my confusing english and i hope i cloud help ^^ !