First-time poster. Found a local partnership on a PA28-151. Never owned a plane and been considering one for a couple years. I have the go-ahead from my better half and I'm planning on starting my IFR training in the next month or so. From photos, it looks like the plane is in good shape externally and was upgraded to 160hp. The panel is /U and very much dated but appears to be in decent shape and looks to be set up for basic IFR. I'm almost positive it isn't ADS-B compliant, though. Waiting to speak to one of the partners more and go over the partnership agreement. Buy in is ten grand and the other partners are student pilots. My questions, in no particular order, are: *What's the real-world cost you all are seeing for ADS-B install (if not compliant)? Should I consider this in negotiating the buy in or is this fair? *Would you consider partnering with individuals who are inexperienced or don't yet have their private? *Would this realistically save some money for my instrument ticket? *Should I have an instructor take a look at it to confirm IFR capability? *Any important questions I should ask the owners/partners that I might not have thought of?