Dude, first post says 97 CR250 as in 250cc two stroke premix needed. Looks to be in great shape. Most racers will do 4-8 hours a month on a bike if that helps you. Ive raced 3 day weekend races and would go threw 5 gallons.
Honda dirt bikes are known for their reliability. Lots of upgrades. The wheel sets alone were over a grand.