I've read both carefully , but can't be 100% sure if there'd be any compatibility issues.

I'd really like to add ARS - Metallica mod to my mod list, currently using ABT mod (only using tweak for progressive damage +25% on arrows on bolts from that mod package).

Only other mod that I currently use, that might affect ARS is Immersive Creatures (not 100% if the loot on the new creatures would interact in a negative way).

I read that the ABT tweaks that I use ONLY affect the damage value on arrows & bolts, but not 100% sure if ARS-Metallica also does, but I really like how with ABT, there is a damage difference between all arrows and bolts , making it matter which one you use.

So far, my load order with about 40 mods is very very stable, and don't want to risk throwing that off balance.