Is this something I should be proactive about and contacting someone or will I be OK for an extra week or so?

Also, if the first girl does not have good credit (she told us this from the beginning due to medical bills), should we make her pay an extra deposit, if so how much more is normal?

Consider this as food for thought and think about how you are affected in your sector of the real estate world by advertisements. 

Under most office leases, you are going to be charged extra for all the operating expenses of the building, from taxes and insurance to security to cleaning the restrooms.If you need any work done in your office, you have to go through the building management and use their contractors.

Aside from the extra income and net worth real estate will provide I think the biggest thing my wife and I are excited about is getting into something we can both take part in.

I will be purchasing from overseas so it seems like an easier solution plus the low interest rates we have could make the extra cost less of an issue.

Just food for thought!

If a landlord has a lot of short-term tenants for only 3-6 months as a time, there may be extra clean up and repair costs associated with get the unit ready for new tenants. 

Spending  $75,000 extra to get $200 more rent a month isn't too appealing.  

Here is what we put in our move out letter, which may be helpful to build on:Specifically, here's a list of items you should thoroughly clean before vacating:[ ] Floors[ ] sweep/mop laminate floors[ ] vacuum carpets and rugs (shampoo if necessary)[ ] mop kitchen and bathroom floors[ ] Walls, baseboards, ceilings, and built-in shelves[ ] Kitchen cabinets, countertops and sink, stove and oven--inside and out [ ] Refrigerator--clean inside and out, empty it of food[ ] Bathtubs, showers, toilets, and plumbing fixtures[ ] Doors, windows, and window coveringsPlease don't leave anything behind--that includes bags of garbage, clothes, food, newspapers, furniture, appliances, dishes, plants, cleaning supplies, or other items that belong to you.For move in, put all info in the rental agreement.