I think thats a good wheel base personally.
maybe not as much as an advantage for rocks only but on trails or taking lines threw rocks since your a little longer then most it actually gives you quite a few advantages more then disadvantages from my experiance.
my biggest concern is that since im so low its gonna get me hi centered easyer.
but with it longer its gonna be more stable on hillclimbs, desents, desert, proble side hill. and more cargo room.
so really its fine, but going from a 103" to a 118" WB will be different