Thanks everyone for the great advice. And it's reassuring to see a lot of agreement on certain items (e.g. pee valve). After having my kids obsessively measure me 3 times, 'm about to pull the trigger on a Nova with:
* telescoping torso
* Trigon pee valve (in all my searching I can't find a single person who regrets getting the valve)
* Sitech quick neck and oval wrist seals. If I find my hands getting cold, I'll buy the Rolock dry glove system later. Antares seems to be hated by many
* DIR location dump valve: I have fantasies of taking a fundies course at some point soon, so figure I'll go with DIR config
* Bellows pockets on both outside thighs. I initially was going for zip up, but I consensus seems to be on velcro for potentially critical items
* Kevlar knee pad
* Velcro socks
I'll sleep on it before hitting "buy".