There is another option for those like the OP. We did this back in the FFXI days with those content lockouts of various types.

Join a good FC. No one ever uses the 'need' button, it is an instant boot from the FC. You can either use a points system or priority list. Then for drops you can spend points / high priority gear for any job that will give the biggest benefit to you. This way you can get DRG chest on turn 1 then on turn 2 get WHM head. Your WHM doesn't even have to touch coil, and this drop will do more for your WHM and thus your FC than the ability to need on DRG neck instead. mind = blown

This is possible because... You don't need all lvl 90 gear for turn 1 - 4 (and probably not 5 but no one can really say atm). Now you are out of darklight on multiple jobs in some areas. This goes for spending your myth too. Spend it on pants for one job, or save it for a body on another. Once you have a job geared well enough to clear the content you do whichever will give the most benefit to your character / FC.

Every drop or token spent this way will improve you for your group on multiple jobs. This is better for your FC than having 1 full 90 job and the rest in 60-70.