Try
this codec, the PICVideo MJPEG. At the highest compression, you have great quality loss (wmv compression would be better quality...), but is VERY fast for the export and never crashed premiere nor ae. For a beta just for you, it would be great (I just happen to prefer exporting the video than just previewing it in premiere... it just kills the sync showing a frame out of 10...).
If you want a high quality beta, than Kariudo suggestion will do. Frameserve your project to virtual dub mod and compress there.
It's up to you what to choose... but, seriously, exporting uncompressed never gave me problems in Premiere Pro CS3, so I don't see why it does to you.
