Lack of ventilation is clearly causing your mold/mildew problem, so a functioning window will help, and the larger the opening the better.It does require a match on the exterior finish material to fill in the size difference, but these baths are always on the side or rear of the house, so it's not very noticeable.The fact that it's a different size and more contempo-looking than the older original windows, isn't a compromise on esthetics, either.

There about 100 million posts about “what should I do with X amount of money” so I’d recommend utilizing the search function to find those and read them.

You may want to partner with someone who's familiar with the marketing side of flipping, because this is the most important function.

The "popularity" is just  a function of how many gurus are trying to make money selling you the "secrets".

There's a function IRR in Excel that does this for you.  

I was already leaning to the side of just stashing the money away so it will serve either/or function, first as a down payment for your next property or money to pay major capital repairs or improvements.

I like the idea of college rentals as you just need them to be functional not nice (since they will get beat up a little each year) and that is what deposits are for.Definitely require a co-signer, normally it is the parent of the kid. 

That more or less serves a similar function as the estoppels except for that the tenants are not a part to that Addendum.

Tried Buildium, but it referred me to different platforms, it did not look very convenient.I would like to make application process/  lease signing/rent payment easy for applicants and for me.Zillow is on the way to build all the functionality, but they are not there yet. 

It is functioning still but not like it should.