Hey guys!
This is a bit late, but I just saw this post. We actually built software to do exactly what you're looking to do
It's the world's first affiliate program for Kickstarter!
If you're running a campaign it's free to use and you only pay if affiliates earn commission. Here's where you can create an affiliate program right now:
https://kickbooster.me/If you have any questions let me know!
Cheers
Jay
https://kickbooster.me/