Other times a 10 percent cashier’s check is required at the time of the sale and 30 days are allotted to pay the rest.

In my files listed here on my profile you can see a mall chart that shows how to apportion the lines as to what is basis and what is not.You will then apportion out of that cost an allotment for the land of the property.

If they've submitted earnest money, done the inspection and passed attorney review, and are now out of the allotted time for due diligence (typically 5 days), you can keep their earnest money. 

I allot 5% to vacancy, 5% to repairs, and currently 10% to capex I'm putting 10% to capex now although when I do quit self managing, I will be cutting that back to 5% which is the average reserve for the quality, and then take a little hit on the cashflow when bringing in property management. 

I think the amount you have allotted for repairs is too low and you don't have anything for Capex. 

Allot of painting, allot of sheet rock  finishes etc.. got me to $45k.

Closed well within timeframe allotted.

Easy reno with $50K profit... but all my money is allotted for at this point on the 2 projects above.

I am pointing out to @Rick Santasiere that there is definitely at least one good reason some people may not want to use a buyer's agent.Regarding your comment about a buyer representing themselves as principal and not being privy to the 3% that was allotted for a buyer's agent...

Can usually allot 5-10% vacancy factor and same for maintenance.9) Class B usually also okay, but needs more attention from owner and/or PMC.