So, I'm about to the point where I'll need the high level mats out in the frontier (unless the devs relent on the housing/vendors, or open SI).

I've leveled every craft to max on live, but never had to deal with a frontier run to do it.

Could some kind soul please explain the fastest route to buy mats (reinforced gloves and boots to be exact), and either vault them, or find the nearest forge?

Which Frontier entrance is fastest? Which keep is closest? Where do you take the mats?
Google was very little help.
Thanks in advance.