It's hard to pick one, but i focused first on Weaving/Goldsmith to supplement the main combat class, THM.
But really, it will very advantageous if you would level all craft to 10 at least. The level 10 crafting abilities are all very nice to have to minimize your synthesis failure and loss and as well as trying to HQ.
So your first craft would be, the first local leve that will give you the best reward. Find a local level that would give you crystals or gear, if you find one, do it :p.
Mikayla Soulfire (XIV), Ul'dah, Istory Lodestone Profile
Mikael (XI) Bastok, CaithSith
Thus is our agreement written, thus is treaty made. Thought is the arrow of time; Memory never fades. What was asked is given; The price is paid.