http://infinite-source.de/az/az-calc.html If you use that tool, it should be able to give you reasonable settings. I estimated an upload of 24kbps (3KB/s), and it came up with 2KB/s max upload and 63 connections. I'm assuming the tool is for a regular modem/broadband line, I'd probably set Azureus to 2KB/s max and 40-50 connections; which still seems high for EDGE but it may work.
Now personally, I wouldn't use BitTorrent on EDGE as you'd probably either end up with horrible speeds anyway. What I would do, if it's possible, is have a computer somewhere (say at your home or business) that can stay on. Then when your away using EDGE just remote desktop into it, download what you want off BitTorrent, and transfer it to yourself on EDGE. It'll probably be quite a bit faster.
If you really need BitTorrent directly on EVDO then I'd try and find a client that doesn't upload. I'm not sure that exists as the whole point is to share, but if your not uploading you should get decent speed. AFAIK EDGE is Asymmetric, in which it can only have an upload or a download packet. It can't do both at once, so if you use half your upload speed 1KB/s or so, then your download is also being cut in half. Upload at 2KB/s and your download is completely shot.