Some perspective here is gonna be critical.
I'm putting myself in your shoes, and here' what I'm thinking: First, it's not a $3500 job. They can suck it. You did the VCG yourself, you can do the rest yourself. You're gonna have to pull the VC anyway to take pics (get some bigass halogen lights and video yourself pulling the VC, because they'll say you pulled a fast one).
Now - The Q has gone a lot of miles without much maintenance, so the hoses are due. No big deal. While you're at it, the under-plenum hoses can be done (if they haven't been already) and you can clean / detail everything as you go. We can walk you through every bit of it, because we've done a LOT of Q rehab since we started this joint 14 years ago. The only downside of this whole thing is that getting behind the engine is a PITA (but can be done). I'd remove the hood, set it someplace safe, and get a back brace.