what are the chances of geting banned
As long as you avoid Guild Quests, close to zero.
Klab's gonna perform a special maintenance on 26th to get ready for v9.4, and we don't know if they're gonna insert new codes into the game to detect mods like they claimed they'll look into. Personally, i will take it day-to-day from 26th onwards, provided a new mod gets made, tested and posted here.
Start a dummy account on an emulator to carry your main account, this is by far the safest way to use this mod. I'm doing some last-minute grinding myself on Epic Raids in case they really crack down on mods in the coming week.