hey guys, quick question for you. i have an 09 jamis durango 3 it has alex dp17 rims and kenda komodo tires..i would like to upgrade for 3-400 bucks for both. can i get something decent or just wait...or should i just build custom wheels little by little...thoughts... also this will prob be a noob question..r the co2 pumps reusable or disposable or should i just buy a reg pump for rides???....