yea dude, good choice, those pickups look very high quality and suitable for exactly what you are trying to do, convert a vintage ax into a metal shredder. i did that with an old fender strat but the problem was i hate the neck on that thing! i went out and bought this ibanez:
http://www.samedaymusic.com/product--IBASZ320 and i've been using it for EVERYTHING!!!!! it sounds great out of the box and only cost about $400! worth a shot for anyone who wants a cheap shred machine. the sg's feel and tone didn't even compare to the ibanez when i compared in the store, IMO, dont flame me cus of my opinion! i have been waiting my whole life for this ax.