Nice, but in my humble opinion that stem is way too long (and too old school) for a frame like that, and you've got the bars rolled all the way forwards as well
. Just wait until you're dropping down somewhere really steep and you've got loads of brake dive to factor in too
70 - 90mm would be much better - and stick with good wide risers and forget the bar ends. The Slayer was never intended to be some stretched-out XC race type of bike and by trying to make it into one I think that you'll compromise it's true capabilities and won't be able to get the best out of it. After all, it was designed to be what we now would call an AM bike and flat bars, bar ends and mile long stems don't cut it for that kind of riding.
It'd be like buying something like an Orange 5 and fitting a 130mm stem, flat bars and bar ends. It would be crap....and pointless.
Just because you can doesn't mean that you should
Of course, I'm just a miserable old curmudgeon, so I might well be talking through my ass.....