Before he seals it I would call him ASAP and get it blended better,, Yes stain will accept darker in areas but this clearly looks like it was lefton longer in areas or applied heavier in areas.. not blended in as well as it shouldDON'T delay.. you don't want it sealed and then you'll really have delays. 

In this setting you want to blend in to the surroundings. 

You can wipe out the 75 BPS higher by getting the seller second financed at a lower rate thereby blending the 2 rates downward on average.If the seller has only minimal equity in the property they might not be able to hold a second as it wipes out any proceeds they get at closing.

If it turns out to be SBA then you might want to do this.If the lender allows use a 80% ltv and put 10% down and have the seller hold a short term 10% second.The second the goal should be to keep the interest rate low so that you are not paying a high blend interest rate between the first and the second.This will depend on if the lender allows it,how much equity the seller has in the property meaning (Is the 10% what the seller was counting on for cash out of the transaction?)

The wealth of information here is unparalleled. 

Today, there are almost unlimited options in designing a self-storage facility that will blend into the area you plan to build.

My personal favorite is a fine blend between direct mail/online marketing and relationships.

My recommendation to all first time investors is to purchase in the best neighborhood you can that will give you both a blend of a decent return, low maintenance tenants, and a history of appreciation.  

Good color blend throughout. 

Doing so will better reflect your cost of money over the term.This is pretty much why I don't get excited over landlords or investors speaking about cap rates and cash on cash returns, to be accurate, you need to look at the blended or weighted contributions to the deal.