First of all, there is a tank list on this forum that is very usefull. I don't have the link here since I'm at work (it's in my favourites at home), but you should be able to find it while searching the forum I think.
Second, if you are exalted with all factions, than you can already get a lot of gear. You need Earthen Ring just to revered for the enchant, but almost all other factions offer tank items at revered or exalted. Visit the quartermasters and will have a nice set of gear already.
If you don't want to spend the gold to craft the epics, consider farming the mats. Ask a guildy for some Truegold transmutes. I did it that way and it didn't cost me a single gold, just time. Since you are a BS yourself you probably don't even have to worry about the Chaos orbs.