You need to know for sure.Even if you raise the rents, the property is still a negative cash flow, so it doesn't make sense.There are always comps.

I intend to implement them once the process begins.

Should I charge her a prorated amount of the original rent or the increased month-to-month rent for January?

The good news is that it's never to late to start!

With all of the short sales popping up on the MLS I know I will be successful in finding and helping someone.

.: unless a lake front, dont bother - the market is oversaturated. open airbnb and see how many available properties there are for the upcoming holidays.  

The top unit and rest of the townhouse is completely unliveable without renovation, the only liveable spaces are the two studio apartments that the tenants live in.

Congratulations on the successful purchase.

There is a great group of us who invest in the NL area if your looking for some folks to connect with.Now to your question, you'll find rent prices vary quite a bit in NL depending on what area of NL, but I'd be happy to give you our averages.1, 2, 3 would average $1150, $1300 and $1500. 

yes, you can use the rent at 70% for some lenders