After that I'd just go with either annual or monthly depending on if you know you'll need to use it for an entire year, because it does offer a discount by going annual.

If it helps, the principal balance will be $80,000 with an interest only rate of 6% for one year (or less, depending on the family matter). 

You should be able to get $2,500 / mo. in rents or more just depending on the units amenities and sizes.I have been battling rats at my house since I moved in a year ago and I just buy the TomKat bait boxes at Home Depot.

welcome to BP @Michael ChuaEverything depends on the numbers and your preference.

It definitely does depend on the areas you're in.

In house is cheaper but takes a lot of time to put together so depending on what value you put on your time- may be worth having a third party do it. 

Yes that is the fishtown area, could also be kensington depending on what street its located on.

As mentioned above, it depends on your relationship with your agent.Some agents are more open to helping their buyers than others.We did it through a program, where the agent was part of the program.

The cost of site work is going to vary greatly depending on the lot.

Depending on your experience level with construction, I would highly recommend researching local contractors and either pay one for consulting with you, or use that contractor to do the rehab.