You don't say what those GC's quoted your, but I'm guessing its several hundred, if not a grand, once you have a licensed plumber and a licensed electrician involved.If you do proceed, I don't see any point of having a GC.

I am 25 and after reading about 15 books so far on real estate I am convinced that RE is for me and will help me acheive my goal of becoming financially free.I just got licensed in IL, and currently working as a Electrician and part time in RE.

Might need an electrician too.* Also helps to have a financial person - lender, banker etc.. lined up.* It also does not hurt to have either a buyers broker or a lawyer you can ask questions to.  

see if the layout would allow a smaller GE space maker type stackable in a closet and even get a plumber to bid on plumbing it, an electrician to put in the proper electric hookup and a contractor to get you exhaust venting cut and installed or connected.

Or get yourself apprenticed to a plumber or an electrician or HVAC installation/repair - you'll learn valuable skills.  

The main goal is to see the problem, and hopefully guide the tenant to make the minor fix themselves (if its minor) or at least help the plumber, electrician, etc. make a diagnosis and bring the right parts on the first trip out, instead the back and forth to the hardware or supply store. 

I will need an electrician who can hook up solar and a battery pack, and a plumber who can hook up a rainwater capture system. 

The house is also in an LLC if that makes a difference.I have shopped around for policies but they are either double the price of my current premium or require a bunch of hoops (letter from licensed electrician and plumber).  

(Working as an electrician in Canada so no student debt but decent oil salary)

Things work, but inspectors so far recommend replacing things.Tomorrow, I will have a different electrician and plumber from Mend Services look at the house's electrical and plumbing system.