Monk - Metal pipe questions

[Anxarcule]

I'm a 48 monk looking to start working on my epic and have a few questions on getting the metal pipes from Chardok and KC.

1. At what level can I try and solo these? Figure I have decent gear and a good weapon (Peacebringer)?

2. If I come with a shaman buddy, when can we camp these mobs and still gain exp? I don't mind dragging him along as long as we can gain experience while doing so.

3. In the red server, are these constantly camped/griefed? What are the chances we can camp/exp for this in peace without being hassled? I know it depends on who is on, etc, but for the most part (I don't feel like doing a CR every few hours..).

Ideally once we hit 49 or 50 I'd like to start camping these together while still gaining good exp - are mobs too high for us to duo this? Also, do mobs in these zones see invis?

I really want that epic but to pay 10k per pipe is way way beyond my budget (still saving for a FBSS)..