Currently I'm working on getting SCH to lv34 for E4E but after that I wanted to set my sights on tanking. I'm just unsure of where to start. I want to lvl WAR but I'm concerned about being a viable tank without all of the GLD cross-class skills at my disposal; along with some from MNK as well. Should I level those jobs first or just dive right into MRD and level it to lv30 then go back and get GLD up to lv34? Which cross skills are most worth getting from the other jobs?