sounds good, I worked the bejesus out of a 5 horse cart type portable sears unit and two things I did to it probably helped.
I turned a fan on it when glass beading or using the body grinder/DA sander.
I extended the output copper tube from the compressor head to tank and ran it in a couple of loops in front of the compressor pulley which had fan blades cast into it for better cooling.
That thing got so hot it would heat up the hoses and water would come squirting out of the tool which was more cold from use.
The hotter the air, the more moisture it will carry.
With the larger tank you should have less problems like that. But if you pipe air into the garage, the added pipe will cool the air more, try to angle the pipe so the water will drain back to the compressor where it can be drained out.
Make a drop leg below the outlets that extend one foot below the outlet and put a ball valve at the bottom so you can easily drain the drop leg.
I have plumbed two shops in schedule 40 1" pipe but I've heard it's not OSHA approved for air.
The weakness concern is in the glue joints when hot up in the rafters where heat collects.
Here on the coast of California, it doesn't get that hot and I used a two part purple primer and grey glue to do the joints. I have over 400' of air pipe in my shop! It's been in there for 10 years at 175psi. The pipe is rated at 450 psi.
the first PVC shop I did was our farm shop and it's been working for 20 years with same pipe and glue.
I have two friends with the same stuff, but used the one setp clear glue. Theirs are around 15 years old. No problems.
Check my web page for First Gen Camaro suspension info:
David's Motorsports page
First Gen Suspension Page
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Can Am Vintage Racer
[This message has been edited by davidpozzi (edited 03-22-2001).]