Suspension is the most important aspect of the bike. Without a good setup you wont feel much of a differance with any mod. If you cant hold the power to the ground your mods are a waste.
how ever most guys want to mod the motor first then do the suspesiin later becasue how much it costs, in that case get it ported, adjustable timing plate, cool head. Then start saving for suspension. Buy some works shocks, they are cheaper then Elka and work great for the weekend warrior.