BuddyPress and BP Template Pack with Existing Theme is Not Smooth Sailing

I have my site on a different theme than one of the buddypress compatible themes.

I read through a lot of buddypress and BP template pack posts and docs and frankly it does not seem like smooth integration with an existing theme.

My current theme is stable and works properly and I’m scared that introducing buddypress and BP template pack will mess it up.

Is there ‘one version of the truth’ documentation on how to integrate an existing theme with buddypress and BP template pack that I can follow and get this to work the first time around instead of trying it and having to struggle to get it working.

Thanks