I've recently been powercrafting GS and my other crafts. In the last couple weeks I've gotten GS from 53 to 85.7 atm, when I was at your stage I just camped the AH for cheap platinum ingots, made earrings and tried to desynth for more ingots to synth again, think its important to utilise lokyst's FFXI Crafting Timer so you get the best timing/direction for skilling up. Also its handy if the server has kupo power artisans advantage for the desynth and break synthing.