Wait....you got a 29er? As in a mountain bike? I thought you were eyeing road bikes?

I prefer to carry Co2 (2 of them) and have separate, fully stocked seat post bags for each of my bikes. It's more costly, but it means that I don't accidentally ride off without it. I'm new to MTBing, but DH always brings the floor pump in the car when he/we go. It came in handy last week, because he got a flat in the parking lot and didn't have to burn through any cartridges to repair it.