Before you jump on a DNA chipset; you may wanna take a gander at the sx350 chipset.
I've tried them both and own neither- yet.
The sx350 is upgradeable and it down regulates both of which the DNA won't do. As of how the sx chip is upgradeable to run 50 watts. I've been toying with the idea of building one for a few weeks now. There are a few vendors online that sell "kits." It's kind off like an ikea nod. Lol
I'm just waiting to see what the next gen provari is going to be before I jump on something. But in my opinion, based on the limited research I've done the sx chipset is a significantly more capable option than the DNA, and it's cheaper.
I just can't find many mods on the market that already have it installed.
You can get all the parts to build a mod.