On the subject of a tall tent.....We bit the bullet and bought a nicely discounted Redverz expedition 2 a couple of months back. Loads of room and tall enough to stand completely upright in the "garage" / porch bit, and almost upright in the front of the sleeping compartment, but what I hadn't appreciated was that you still spend your life on the ground. All your stuff is on the ground whether in the porch or in the sleeping section so you end up kneeling down to do just about anything anyway including getting into your pit. The best bit is the height allows for comfortable sitting in out the wind or weather - not that we have needed to do that much this year. A high camp bed in one of these would be Luxury but probably not very easily bikeable. Having said all that, it is much better than a small crawl-into-tent for extended trips.