Since we will be investing remotely, we plan to work with a property management company to oversee day-to-day operations.Does this sound like a solid strategy for a first investment property?

kind of like prosper and those type of companies ( which I cant see loaning money to individuals totally unsecred like a CC company ) that seems like super high risk.

The people that run these companies usually come from an "investment banking", real estate, or construction background.

The property company they use was also very thorough in the way they handled the property.

But the deposits did go to an escrow company, not directly to the seller.

In my case, I have residential rentals in one LLC, commercial properties in another, self-storage in a third, and my real estate company operates in a fourth.

You'll need to hire a title company to find out. 

I know the larger companies around here were charging up to 25% but it will probably vary no matter where you are at.  

GSP REI is a diversified real estate investment company based in the Philadelphia area.

There are a ton of free tenant applications online and through property management software companies such as turbotenant, rentspree, zillow etc.You will want your application to meet any state specific guidelines (if applicable).