I'd sell the shocks you have if you're planning to get rezzies. You can add them but by the time you have them rebuilt, revalved, resprung, and add the rezzies you could have a new pr. By selling yours you could re-cop some of the cost.
As far as the a-arms quicksands look cool. Don't forget about ricky stator a-arms. I've put mine through a beating over the last 3 or 4 yrs and even the ball joints are still tight. BenBB races them in the desert too.
As for the rear, I know the rear is expensive for aftermarket and the stock is a pita. I have a -2 stocker. It's really not to bad. I see people fight those expensive round carriers too. I'm not convinced they are worth $700 dollars.
The rear shock is up in the air as to rebuild it $400 or so for spring, revalve and zero pre-load if you wish. Or sell it and buy a good aftermarket one. The rear is suppose to be a good unit when set up properly.
Don't forget about moving the pegs back. I have the ac propegs that are moved and everyone says my banshee feels like a caddilac... I have axis shocks to but the pegs give the extra room and puts the weight over the wheels more.