Using up what charms I have first, got about 12k crimson + 7k blue, plus a bunch of spirit gems.
Afterwards, getting up to 48-49m herblore xp, everything's banked now (with extra..) from farming, and then I've got some mahogany planks to save time on 50m construction. If I manage to finish all of those (doubtful), then I'll.. maybe just use some corrupt ore for smithing.