Air Compressor setup in my garage help

[slowcpe]

I purchased a 60-gallon air compressor a couple of years ago from a buddy. I'm finally getting around to actually plumbing up my entire garage with drops. I did my research and decided to use the RapidAir Maxline kit. I read a lot of good reviews and so far its pretty easy to assemble.

Given my garage is a 32'x40' and I wanted a minimum of 5 drops, I ended up going with a loop type system around the perimeter of the garage. I'm running 3/4" piping all the way around including my drops. Each drop has a threaded 1/2" outlet and a drain.

My drops are going to be: at my workbench near my vise, at my workbench near my small HF sandblast cabinet, one on the side wall for my truck workspace, one on the side wall primary for painting and handheld sandblaster, and one between the two overhead doors on a hose real for outside stuff/tire filling/etc.

This is just for a one-man hobby-type configuration.

Here's where I need help:

If I come off the compressor with a flexible hose to a nice 3/4" regulator/filter combo then to a "T" for my loop and then a 3/8" filter for my drop for painting, would that be a decent setup?

Would I need a dedicated filter for my sandblast cabinet? It is located almost caddy-corner from the compressor.

What size fittings does everyone use? I see 1/4", 3/8", and 1/2" but 1/4" appears to be more common. Do I need dedicated drops for each size? The local air tool supplier recommended this stating I'd need more volume for 1/2" impacts and such. I'm thinking 3/8" for hose reel (it had a 3/8" male input), 3/8" or 1/2" for my truck workspace drop, 1/4" for vice area?, and whatever I'd need for sandblast cabinet. I'm also considering a retractable hose reel on the ceiling if need be.