Most people who run their own businesses usually don't see the work they are doing as "work" but more like paid enjoyment and therefore can usually work 12 hr days 6 days a week and collect plenty of money along the way.
I say make hey whilst the sun is shining and go hard but make every minute with your wife and kids extra special.

Get some extra staff Nino on a contractor style basis.
Pay them per job , not per hour and keep quality high etc etc.
You have done this with Tim etc obviously but why not find a few pinheads who live in your part of the world who you can employ to cut thru the work and make more income and therefore profit.
Stripping playfields etc and taking photos and with your supervision, this could be a walk in the park with a few good guys.
A pinball restoration business did this up here for 20 plus years very successfully. Food for thought.