Initially I had every intention of using air tools for wheel nuts at home, purely to save the battery's on orgazma gizmo.
Reality is, is I'm sure you know, its so much easier to pick up a cordless impact than faf about with air hoses that don't do the job anyway unless your buying a mahousive compressor.
So in retro spect, my old 18litre was probably enough, it drove an air ratchet which will only give 20odd nm max anyway. Even with the Lidl pump I have now, which I can't remember the details of. It was posted in here so someone may remember. But iirc it was either 25 or 50ltr v twin pump for under a £100.
Anyway, point is, like me, there's no point going for a huge pump. Fairly sure 25ltr is enough for tyres, air line, air ratchet occasionally( for oil filter cap

. )
Unless you really want to save your de Walt batteries....? But given the size of pump needed to give the same power for wheel nuts, and the size of your garage when built, tiddler compressor is in order I reckon.
I have the Lidl retractable air line btw. Excellent for my needs, cost £40 iirc... But the hose has cracked and is leaking at the crimp on the end of the hose. Which is disappointing.
( Air line and compressor where in an offer though )
Mm aren't particularly cheap IMO. Compared to the Lidl offers. So might be worth waiting....? Another vat free day will be around long before the garage is built anyway, surely?