Inspector came out, rehab work is SHODDY, should I back out of the deal?

[Ashton A. Moore]

Hey all, I just got the inspection back on a property I was looking to buy. The top issues include: 

- P trap improperly plumbed in bathroom

- Moisture stain in one of the bedrooms

- Double taps in electrical panel 

- False ground, or "bootleg ground" 

- Outlet GFCI not functioning 

- No air filter and nowhere to place one on HVAC

I'm actively looking to see if any  contractors can go over there with my real estate agent or look at the inspection report and see what's going on. I live out of the country though so it makes things difficult. The last project I purchased was a full renovation and that contractor has since left the area. I was/am trying NOT to buy a complete renovation property again, it was expensive and a lot of work. Thank you.