Good luck...like a few others have said, similar things have been tried and haven't got too far (or rather they stopped talking about it anyway). The difficulty is that once you get to something of moderate value there are limitted trades available - there's a huge number of items worth in the region of 100 sweat, but there's very little items (relatively) once you get up to say 5-10% of a hangar and still less as you go higher...
Btw, 100 sweat for 80 dung - terrible trade surely? Stop your scamming, Nun
