It is a modest use of my time and the expenditure is minor but I find it helps in building goodwill that comes in handy with subsequent issues as they arise.

I assessed all of my numbers including 15% for property management and included capital expenditures as well as maintenance.

I analysed them but my capital expenditures budget was getting used up by my continuous maintenance.

I believe that in the one they resided in, they also had a roommate too; which significantly decreased any of their own out-of-pocket expenditure for their own amount they would have needed to pay towards their mortgage.

They provided a service, authorized by your tenant, much to your benefit, so pay up and stop counting the pennies that you likely aren't even going to be paying once the insurance company eventually re-compensates you for your expenditures. 

That includes:10% Property management5-10% Maintenance10% Cap Expenditure (setting aside money for replacing a roof, etc)Etc.You can also use Craig's List to verify rent numbers.

The new IRS regs dictate repairs vs capital expenditures so you will need to get with someone who fully undersands the new regs.

Would you suggest that I should factor in 15% repairs (3x my 5%) and another 15% for capital expenditures?

@Mustafa Nemat Ali We may have to go a little beyond the 100k in KC to limit any future expenditures... but I still think it is a great option! 

Personally I use 10% for vacancy, maintenance, CAPEX (capital expenditure - new roof, hot water heater, a/c, furnace, etc...), and then 12% for property management.Go to www.rentometer.com and you can see how your current rent fairs with the rest of your market.