head gasket job

[Pimpin Dsmstyle]

I checked compression and the car had 150+ in all 4 when I bought it and now it has about 100 in 3 and 135 in 1. It over heats and loses coolant. I'm going with a bad head gasket... That's my best guess.

I saw it's 750$ for this job. That's all parts included correct? Including all timing belt parts ( all pullies and tensioners etc). I think it has ARPS but if it doesn't will it be the same price to install some used ones ( i don't have any moly lube but I have all the bolts).

last questions - wait time before you could get it done and how long aprox. would it take?

1g 91 talon TSI awd.