1. Advance in your Grand Company missions, save seals, buy chocobo license.

2. Grinding with a full party, food and a rested inn bonus. (read up on rested inn on the last patch details) Leves for crafting.

3. I don't think stats makes much of a difference, but what else are you gonna do with your money?

4. http://mooglebox.com/includes/ and http://mozk-tabetai.com/

Now stats is class specific. I'm not sure about what con should get. But be careful 'cause atm you can't redistribute it.