If t were me, I'd be making that drive. You've attempted to contact him a few times & got nuttin'. The 45 seems like a minor issue. Drop in & see what the hell is going on. Light a fire under his ass.
I'm aware that good people for our cars are hard to find & at times there can be a wait list. That being said, from the list you posted for me that should be a couple weekend only job. Head gaskets don't take too long to do. Scanmaster hook up MAYBE an hour, rear brakes MAYBE an hour, & new chip 5 minutes. He's had your car nearly a month. With no quote, a ballpark, or a call back. That says to me he hasn't even bothered with it yet.
Of course follow the sage advise of the previous posts in this thread. Find out why they blew, check fuel pump, add Hotwire if needed, amongst the other suggestions. Just my useless $.02.