As far as a box scraper, my 26 does a decent job, but definitely doesn't like a full box of gravel in a 5 foot box. The Boomer 24 should do fine with light box scraping on a decent gravel drive that isn't too long. If you're looking at a quarter mile, you'll be asking a lot, but again, with patience and small bites it will do well.
Thing is, if you buy the 24 and end up wanting a bigger machine, youi'll be looking at new implements or working implements that don't cover the wheels - exactly the situation I am in. I think I might get by with a five foot box blade but probably will want a six foot snow thrower. In any case, if I buy the tractor, I won't be upgrading implements any time soon.
Another thing to consider is cost of implements. My five foot box blade is a cheap one from TSC and it works fine. The exact same blade in a six footer drew a lot of criticism in the reviews from people who said they weren't strong enough, and bent. Maybe if I get enough power to drag mine around with a really full box, it might bend too..