7?! wow you must live in the middle of no where. You should look at a more streety style bike like a leeson, but they are quite expensive or a inspired, both of them have seats but there low profile so they wont get in your way so much. Ermm i think if you've got that far to go you need a seat, otherwise you'll be nackerd before you start riding. Although the gears sound attractive to have in trials there not really good to have. Single speed gives you more ground clearance and less chance of hitting your derailleur/tensioner if you bail also your chain wont come off and rattle as much. If you ask a more experienced 26" rider i'm sure they'll give you really good guidance. Joe