How do the numbers work out for a restored B-25 operating giving rides?

$550 per seat for 1/2 hr. Say Minimum of four people per flight max 6.
Is 100 hrs per year achievable? Add in some paying training transition time.

Cost to overhaul and expected TBO vs a PT6 hot section and O/H at 3600 plus MX.
Fuel burn in ride use vs cruise between points.

The most profitable aircraft is someone else's aircraft.

Seems to be the secret to the aviation business

This might be a bit of a hare-brained idea, but I’ve wondered if this could pan out.

Let’s say you had a career that afforded you a nice, capable, cabin class plane. Say like a pressurized twin or Piper Meridian.

Now you’ve quit that job but the aircraft is fully paid for.

Could this person make a profitable run at a single-pilot 135 operation?

My understanding is the requirements are much less onerous and I’d guarantee Mx budget will be less costly with the owner flying the plane.