I would also go with +2 arms. If your going to replace the front end why not? I ride trails and don't have any issues with +2 arms at all. Since your a bigger guy, you will probably need shocks built for you. Elkas are the cadilacs of shocks. Depending on how hard you ride, you may want the piggy back resis. If you decide to get the resis, be sure to get the compression adjustment on them. You could also try a set of 450 shocks and respring them for your weight. If your dead set on getting stock length arms, the 450 shocks would be close as is. As far as the rear goes, the only way to correctly spend your money is to fork out some $$$ for an Elka. I have spent nearly $350 on my rear stock shock trying to get it set where I want and I'm still not completely happy with it.