700 bucks between a 2 wheel drive and 4 wheel drive honda, even with 278 miles on it, is worth the money, you plan to work the atv, and your going to WISH you had 4 wheel drive come spring time, fall and winter , when things get sloppy!
I am NOT bashing 2 wheel drives either, if you trail ride decent trails, it all you will ever need
BUT you seem to have more plans of work, than trail riding!
you will loose way more money selling it down the road to UP grade later on than what the extra 700 bucks will run you now!
PLUS< you will also have a MUCH larger pool of folks that will want a to BUY the 4 wheel drive if you ever decide to sell it too, so it will hold value better and be a true 4 season use machine for work, plowing snow, hauling wood, or what ever!
as I said I get living on a budget, but, I also believe in buy once cry once, over wishing you spent the little more later on and it costing you closer to 2 grand to get into a like foreman !
as selling a 2 wheel drive is NOT always easy,!
PLUS again, if you shop about, you MIGHT find a better deal yet on a 4x4 model!