Honestly all of the information you're looking for is gonna be piecemeal. but I tell you what, I'll help you out a bit:

Toto-Rak/NM drop seal exchange values (scroll down): http://www.disciplesoftheland.com/fo...?g=posts&t=788

Grand Company Provisioning/Supply schedule: https://docs.google.com/spreadsheet/...hl=en_US#gid=0

Ifrit weapons as I said are 2.8k each. Caravans you'll get upward 750ish each run if you do it right (max 1000, i hear)

GOOGLE IS YOUR FRIEND ;D