HTC Droid Eris :: Recommended ROMs / Overclocking?

I'm an Incredible user, but my girlfriend has an Eris. I'm tired of hearing her bitch about the speed of the phone, and how it occasionally locks up on her, so (now that the easy root method for leaker's is out) I'm about to root her phone and install a custom ROM. Now, I have a few questions for you folks since I'm not familiar with the Eris community at all (and I have some time constraints since she needs her phone back).
1. I'm looking for a ROM recommendation. What I'm looking for is something extremely stable and fast. I don't need any bells/whistles. She doesn't use tethering, at all but it must have GPS/Camera/Blue tooth/MMS working. Don't really care if it has Sense, but if there is something fast/stable WITH sense, that would not be a bad thing. Most important things are speed and bug-free (or damn close). Froyo would be nice (obviously).
2. I am unfamiliar with overclocking. I come from a phone where you overclock by installing a hydra kernel, so I don't know how this works on the Eris. It sounds like I will have to manually set up overclocking in Set CPU, and I'm not familiar with the application. If anyone can give me some tips on how to do this, or recommended settings that would be AWESOME. One thing to keep in mind is that this is not my phone, so I won't have time to tinker with trial and error (in other words I won't be able to start testing at 850mhz and work my way down until it's stable).I know this is a lot to ask, but I'm hoping some of you guys will be able to help me out given the circumstances. Thanks in advance.