Must have shop tools

I vote for a Porta- power, an exhaust pipe bender with dies, cutoff/ chop saw.
Quality floor jacks and stands of different sizes.
I would also buy 2 high quality battery chargers and testing equip.
I would also look into an umbrella policy that has replacement cost in your insurance.
A good CPA will do most the book work, pay expences, taxes, bills on time and give good investment advise.
Make sure you get in writing everything, don't take for granted you
have a mutual or verbal agreement or understanding.
If a detail is important enoff to discuss - document it.
Good luck!!