Go to a building supply like marjam, Feldman  or any other commercial supply house.

More demand than supply.

If you cannot get rid of them through vigilant housekeeping and extermination issues then somewhere they are being supplied all of their necessities.

I have spoken with a real estate agent we have used before and he thinks as long as we can supply the plans, we should be okay but he did let me know there were some additional items that will be needed if the person buying the house has an FHA loan.

I ask myself this because some properties lose some or all the possibility to cash flow because of the mortgage payment.Should I just wait till the supply increases on my area to start investing?

If rental property is in short supply in your town, then rent increases should be occurring.

There's also a decent supply. 

They can knock on doors, drive neighborhoods, go get supplies, whatever is needed.  

In your shoes, based on the info supplied, if they both do business law, that's likely enough for the business structure parts you're looking for and likely either will do the job.

Most windows were broken & it took a couple of kids I hired (with stronger stomaches) several days to clean the place out carpets & all.