PD5 on 8GB Macbook Pro

I didn't see any other threads and wanted to know if anyone is running Parallels Desktop 5 on a Macbook Pro (Mid 2009) with 8GB of RAM?

Newegg has an 8GB memory kit at a almost reasonable price so I think I'm make the plunge. Despite having 4GB of RAM already, I think I've been dancing around bush trying to run 1GB Windows 7 guest and a busy MacOS host. Using iStat, I've seen MacOS swap upto a 1GB of memory into swap, which really throws the machine into a crawl. I've upgraded to a 7200RPM disk to better handle the swap, but in hindsight, I'm pretty sure going with more memory is probably the better bang for the buck.

Does anyone foresee issues with Parallels running on an 8GB host?