for a manufacturing tradeskill that high, i'd be more inclined to keep it.
i had 2-3 tradeskills in the 360 range for months. i slowly worked on them, gathering mats. finally, they are 375. did i need to rush it to 375? not at all. am i glad i did get 375? you bet.
often, it is said that mats are worth more than the completed item. it's certainly true, but if you use your tradeskills correctly, it can be a good complement to your general money-making efforts.
people love the clefthoof armor kits, but that doesn't mean farm heavy clefthoof till you're blue, and then flood the AH. rather, make some when you get the mats, sell them slowly over the week, and wow, you have maybe 300g more by Saturday than you did on Monday.
every now and then when there are lots of mats on sale, lowering the prices, you can profit by buying those mats and just turning around and selling the armor kit.
anyway that is just one use of your LW skill that you can do.
if you really don't see a reason even for raising money slowly, then for sure constantly selling all your ore that you aren't using, will net you nice money.