Further to above, get the mounting in the "spud" style. Will make mounting a lot easy and easier to adjust to the correct orientation.
Also potentially make the left (when looking from the front) 90° not 45°. I added in the 90 elbows otherwise the hose was kinking.
I mocked up the cans with cardboard and played around with where they could possibly fit in. Suggest doing this and tailor to your needs/wants
I just sourced the hose from my local race hardware/spares etc. I am sure supercheap/repco etc. have suitable hose also.
The joiners I got from a fixings specialist here in Perth. Once again, try your supercheap/repco or search around for local shops.
I am contemplating removing my Air Pump to allow more room and so I can place the filler bottle back in.
From reading though, it seems like a HUGE effort to do correctly so probably won't happen