But maybe wires got crossed since we have dual goals of securing a property to live in and properties to invest in.

@Karim Poonja - Most electricians that understand low voltage should be able to help. 

"Dual 2x4 studs supporting doubled 2x10 header..." 

But if you're not bringing a buyer's agent with you, you could always try to do a dual-agency for the listing agent, that way they get both sides of the commission, on a lower buy price.Also, before you say you'll be happy to overpay on a house that's been sitting on the market for 4 years with no takers, lets take a second look at the numbers.

Sale price: $217,000 Dual representation for Melrose Heights Duplex listing, 1 DOM, record highest current GRM.

Also, do you know if rates or lending is the same for Mexican citizens, but working in the with dual citizenship?

A better way to handle the bonus commission might be to offer a buyer's rebate on the seller's broker commission up to 3%, so the seller's broker doesn't look like a dual agent.

Also dual income ($100k) probably puts you close to qualifying for $350k new construction if your mortgage broker runs the application with taxes before reassessment. 

Some listing agents won’t even take calls from buyers... others will refer buyers to a 3rd party agent to avoid dual agency issues. 

How do I avoid dual agency?