Did you go back around Sentinel Island and finish off the opponents that attacked the battle tower? There are a couple chests to loot, as well, and the book in the boat in a tree that Turgoyn wanted you can read yourself for a couple skill points (that will fail the quest, though you can just not talk to him again).


If you have a few malachite gems, and are not going to use many healing auras on jewelry or level 10 of other enchantments, then you could sell a couple of them. I only used level 9 of most enchantments, since they give almost as good an effect as level 10, but use only common ingredients (healing auras always require a malachite gem, so I only used level 10, being lucking enough to find that formula in the Broken Valley enchanter's cellar).
The blind philosopher wanted 2 malachite gems, so presumably you didn't have any in your inventory (may have put them in the battle tower chest). There are a couple malachite veins in the depleted ore mine, as well as the well cave in High Hall.

Other than that, you could go through any alchemy or enchantment ingredients you have, and sell anything you are not going to need right away (once the runners are upgraded, it will be easy to replace what you need).


If you still don't have enough, try working your way along the path past the depleted ore mine (leading to High Hall and the harbour), saving frequently, so you can reload if you hit a spot where you burn through too many potions (if the imps are too tough, you can fly most of the way there). There are a few places to loot at the harbour (don't know if you could get 14k in order to fully upgrade Tom, but you could get part of it, anyway).


In Bellegar's cave of good and evil choices (entrance on a cliff ledge south of where the path to High Hall turns north east) there is stuff to loot, and the level 23 opponents have a moderate chance of dropping legendary quality equipment. Assuming you are strong enough to handle the combat, you could save before each group of 2 or 3 opponents and reload until you get at least one legendary item from each (or 2, if you are patient).