Gil often rides Dalby Red on a singlespeed rigid 29er but he is an animal! I did it with a single front ring (38t) last week so if you pick the right ratio you will be fine.
Better off asking Gil about that. I had 38front and a nine
speed 32/12 on the back but probably only used half of the ratios- it's not too bad on the climbs up there.
I've got a mate who still has most of his Pace, not exactly sure which one but it's an early one. I'm trying to get him interested in our site, perhaps this might be the catalyst!