WoWInterface - Previewing Unit Frames

I'm working on a new UI right now, having never been able to find a pre-packaged one that suited me. But one of the features I really liked on the UI I've been recently using (Semiotics) was the clean layout for the party, which was replaced by raid frames in a raid.

So, in order to mimic that with my new UI, I need to do two things, and I have absolutely no idea how to do them:

First, I'm looking for a way to preview how the unit frames will look in a party, without actually being in a party. Same deal for the raid. I'm using ag_UnitFrames for this UI. Is that possible?

Second, I want to be able to lose my party display and switch to raid frames (entirely) during a raid - is this possible?

Thanks for your time!