You will LOVE it!
I run dual ARB's with my Sanden. Get yourself a manifold to distribute your air to where it is needed. Makes it a lot more simple.
Just be aware, you will be the last to leave a trail...Everyone will want what you got, air. I have filled 6 jeeps worth of tires at a time.
I went a different route with the compressor, though. Got an Extreme Aire compressor, they are new, then rebuilt with Timken bearings so it doesn't need an oiler. But it was a lot more costly than your $38 compressor, mine was $350...
I also put the tank, mine is smaller that yours, under the dual battery tray, so it was easier to plumb up.
Also used soft copper tube, 3/8 inch dia, as plumbing.
I tried rubber hose as plumbing, but it melted. That is why I used the soft copper.
Added up the cost of mine and it was right around $525, all inclusive less the ARB stuff.
I do admit to oogleing a small electric compressor to run the lockers with, though. This is a very large system running for a very small need, the lockers.