I would definitely do the studio apartment so it could be a student rental,  extended family suite or an art studio/man cave.

@Derrick Atkinson, YouTube is the great equalizer when it comes to skill deficits.  

This tends to be more art than science.Finally you narrow in on the property.

Outside of school I spend my free time helping young sales students at my college increase their professionalism and sales skills as a part of a student organization I am on the board of. 

I think your ideas are good - it sounds like this couple do have value to add (some capital, labour, technical skills, and maybe most importantly, time). 

But the GC is skilled (or should be) in orchestrating the schedule and timing of all the trades and keeping things going in a timely fashion.

Would love to showcase my skills. 

They have proven they have very poor money management skills.

There is an art in finding them, but it is far from impossible.

I am still developing my negotiating skills, so right now I am at a stand still.