I decided to hold off on leveling anything more than my tailoring and enchanting prior to Cata (and those just because when I would instance mats for those professions would rain from the sky) and I am *EXTREMELY* glad I did!

I spent a *total* of 1.5k gold and maybe 6-8 hours of farming on my druid while I skill up archaeology and that much gold & mats got me:

5 engineers to 300 (they aren't high enough level to go past)
1 Inscriptor to 425
1 Alchemist to 438
1 Blacksmith to 300 (not high enough level to go past)
1 Jewelcrafter to 425
5 4 alchemists to 300 (not high enough level to go past)