I have setup a Feathercoin (FTC) P2Pool, it's running stable, did a week of testing myself. It's running on a server with 2 x Intel(R) Xeon(R) CPU E5440 @ 2.83GHz Quad Core CPU's, 32GByte DDR2 FB ECC RAM, RAID 10. Low latency!
With +/- 100kH/s you will get about 25 FTC a week, so do the math