I'm new to this forum so, hey everyone, what's up?

I'm looking to extend the swingarm on my 300ex and I was wondering if anyone has a suggestion to how much. I'm considering going +4", however, lsracing has a +6". I mostly do trail riding with the quad and the last time I was out at the Hatfield Mccoy trails in West Virginia, I wasn't able to make it up a hill (wasn't exactly a designated trail). The front end feels very light even when I'm doing the black diamond (most difficult) tails. It wants to flip over on the really steep inclines. Has anyone had any experience with +4, +6 s-arms?