The one I have my eyes on is nice on the pictures (as a particular design), put at a price well below what is estimated by Zillow and apparently (still trusting Zillow) could rent for a fair amount...

Where operable windows are required or desired, casement/awning are your best design, followed by tilt-n-turn, then your single/double hung and, bringing up the rear, your horizontal slider.Finally, it also pays to "tune" your windows to your location and the exposure where they will be installed.  

You will probably want to work with experience in these matters.Another thing you want to avoid is SDR (design reviews).

I gave mine some Walmart gift cards and clothing and sent them on the way to find a new place to live.

Going even further I discovered the state I now live in (SD) offers a 3% gift towards a down payment if you get an FHA through their program (SDHDA).  

Bear in mind: We're a design-build firm, so when we give a recommended course of action it's pretty darn comprehensive.

.- Graphic Design: Using graphics to promote yourself, articles, your website is key to attracting the attention of others.

Most investor friendlies will require Buyer Agency of some type, Some will smarten up by having a service you pay monthly for only to get Comp help and Automatic Expired and Distressed lead Delivery, while Few will agree to a $500 per bought house gift based on trust of your word alone. 

Hire an architect if you want to be fully ADA compliant, not a contractor as they are not a design professional. 

I have a new full time job now, and also have a side business helping solo entrepreneurs with branding and web design.