I've soloed 2 maps so far. Both were close calls not worth the risk. That being said having all jobs at lvl 50. I think whm or sch are your best bet for soloing. The mix of dots and hots at your disposal combined with cleric stance and insta heals are a safe bet. However. There's safty in numbers start a pf group for those maps or ask a guildy. They only get gil for helping so ask nicely