Better ask your broker, your MLS, and your association. 

As I stated above this does not matter because banks and brokers do a lot of different gimmicks to try and make their rate look better. 

Or just work with a mortgage broker in the area 

Bruce not sure if any of the brokers in your market do this :   they buy a box van  and put their signage on it.. and say this is a free moving van for my clients..

Any Mortgage Broker can help with this.

Their customer service is second to none and they've got more education and networking opportunities than any other company. 

Now, I am buying about 2-3 deals every month and brokering about 12 to 15 here in Columbus. 

I'm looking for people who have actually done it or are brokers that specialize in self-storage and are familiar with the markets who could give me some tips on what to look out for and how to work towards buying them.

I agree with Rene about insurance seeming a bit low -- but you can easily get a quote from a broker and verify that.

I don't know the details of your lease - rents, length of lease, triple net, commission amount - but if it makes financial sense and makes the customer happy then absolutely pay for it.