When my doubles box was a little overwhelming and I needed feedback, I did a contest- Guess the Pony- and if someone guessed one of the ponies in the box, they won the pony. The only requirement was that they had to leave feedback for me- it doesn't look like you need the feedback too badly, but it was a really fun contest!
It's very sweet of you to try to find good homes for your ponies! Good luck!