But I didn't leave the cube, I was a tradesman, a drywall finisher.

I have my ducks in a row but need someone professional to perform from start to finish.

Either a multi-plex or a detached with an in-law suite/ finished basement apartment.

It has two units on the front which appear as a duplex, and on the back of the property (property is on a downward slop, there is a 1br/1ba unit that was built from the finished basement which sits below the other two units.

Hard to tell.Anyway, it's been great for flips, because the promo period is definitely less than the turnaround for a flip from start to finish.

Some areas and rent ranges demand a higher level of finish than others.One thing to watch out for is the you CANNOT get more rent than the neighborhood just because of nicer finishes. 

Do I engage a different contractor on each home and pay them a premium to take care of all of the details from start to finish?

If you lack knowledge it's tough to pick out who to follow, but that's just part of the business.Anyway, I'd say finish what's on your plate first, there is a reason you bought what you did.

Finish the basement and then rent or sell?

I only went into the office 1 time a month.So the success is now I get to put max effort into finishing the property I bought a month ago.