Why not floorless in October? Good thing about snow in a floorless tent is, you can pitch the tent on uneven or rocky ground and just level out and pack the snow. With a good pad, it's not an issue.
I will say this about backpacking for big guys: it's easier if your big dimension is in the vertical plane, rather than the horizontal.
For me, floorless is almost a niche thing for times when weight is uber important or I'm just cruising around in the summer months. Though it did save my butt along with two other guys in Alaska when we were on a ridge that wasn't wide enough for a Hilleberg (lightweight thing again).
I just like having a floor in the snow I guess, personal preference thing.
