Don't just look at their prices, also look at their services and compare them to the competition. 

What are comparisons against comparable competition?

We're buying a $93k printer to get more mail out the door, and this is nothing compared to the printers the big mail houses use. 

This way you will be able to compare contractors' estimates, which can vary widely.

Like objectively bad compared to people in other professions.

I'm also a former math teacher, so trust me, setting up an S-Corp for operations is NOTHING compared trying to get 30 twelve year olds at an urban school to learn math according to state standards.

I would first look at a proven company like RentWerx, then compare them to a few others and see which one works best for you.Start by going to www.narpm.org to search their directory of managers.

I've got great credit and a healthy amount of capital compared the loan amount.

Congrats on at least taking action.You've got nothing budgeted for vacancy that I can see; it depends on how much turnover there is in your market and what your prices are like compared to the rest of the market, but most people would budget 1 month of vacancy/year/unit.

Create a simple spreadsheet or written list to compare the features of each and identify the ones that align with your requirements.