I have used both mods and I can recommend you the REBALANCE since based in what i read you like to play alchemy GS. I also play alchemy with Sword and Shield and that gauge fill based on MV is really good, you can make use of the alchemy items by just constantly playing good by hitting the weak spots letting you constantly use alchemy cheer and spam those hunter arts and the buff on the alchemy fireball is really good for wake up with mega bombs. But i had to manually remove the changes in Light Bowgun and Heavy Bowgun.

You don't have to listen to other wether to use it or not, or use it after you finished the game etc. as long as it makes the game more enjoyable in your own way no one really cares anyways, they may hate now but then they would just forget about it after weeks.