Yes. How tall are you? If you're over 6'0 a 29er will absolutely slay the trails you mentioned. I'm 6'6" and ride an Enduro 29er on everything I would ride my DH bike on. For a lot of technical riding my E29 is actually better than my DH bike, which only seems to outshine it on straight-out speed over chunder. Steep descending on the 29er almost feels like cheating, especially steep faces with abrupt g-outs at the bottom.
If you get a modern geo 29er with a Pike you will be well sorted. My personal fave for a more trail option is the Stump Evo 29. Such an amazing bike. I'm also very curious about the new slack-geo 29ers like the Kona Process 111, Transition Smuggler and Banshee Phantom but I haven't tried one yet. Probably best you find some to demo.
Or try out a Nomad3 in XL. Coming from 29ers, including an E29, I'm blown away by this bike which tells me that it's more about the fit, geo and suspension preference than the wheel size. I'll tackle stuff on my Nomad that I wouldn't tackle on my E29. I'd love to try a Stumpy 29 though. It would sit nicely between my XXL TallboyC and XL Nomad3C!