Just because you like the way it rides now doesn't mean it can't get better. 35lbs is a bit of a lump. If you think the bike rides well now, imagine how good it would be if you dropped 5lbs of weight!
For starters you could ditch the dual ply front tyre. I don't even need a dual ply front tyre in the UK and I'm a good five kilos heavier than you (and I'm fast and clumsy over rocks).
The biggest saving will come from lighter wheels and forks. Those Bombers are made from girders but it wouldn't be a cheap upgrade. A set og 36 Floats or the BOS Devile will set you back a big wad but will save you around 2lbs.
I'm not sure what Halo rims you're running but the Stans Flow rim is so strong and likely a lot lighter; it's an obvious performance gain. Lighter wheels will be noticeable everywhere, not just uphill. The bike will feel more nimble and accelerate out of turns quicker both uphill and down.
I agree that if you're happy that maybe there's no need to change, but that's not the same thing as there being a big improvement to be had from lightening a heavy bike (and let's face it, it is heavy!)
