I've done a lot of reading around here but here's a few things I couldn't find-
Is PVC safe if it is only used for the chamber? The bowl would be a socket or something.
I got some brass plumbing today, should I take it apart and plug the ends to hide the smell (when not in use) or will that go away after a few minutes?
Is 1/8" parts too small? I haven't had a chance to test it yet...
Is there an advantage to an actual mouth piece or is the opening in the brass pipe good enough?

Yeah so I got some lame "noob" questions... Any advice appreciated