Honestly, I have no idea if a decent primer will adhere to glass, but it would be an easy fix at least for the ceilings.

Search the forums to get a better idea of calculations to do a quick look and more thorough investigation if you like what you see. 

And if so, any idea what a normal spread is?

You might get some idea from the guys that have Mobile Home Parks with rural water.  

I haven't purchased my first investment yet and I'm trying to get ideas on what I might like to do.

I have this idea that I want to hold everything I touch anyway, because if I sell that the last time I'll ever see profits from the house.

Looking for fellow investors to bounce ideas.

I was planning to put one up when I got the house, but not sure if its a good idea. 

Hi, Looking for a contractor that can walk a property with me and give me an idea of cost for renovation downtown Spartanburg.

Co-signer or not, if they don't have a job and can't get one quickly, the rent can't / won't be paid.Still may be a good idea to get a co-signer, but I'd put primary focus on employment history and bill paying habits as seen on credit report from when they were fully employed.