What is advantageous is someone that is good at underwriting and unbiased (only analyzes the deal based on the underwriting without other emotions).Note i have a fair amount of experience and plan to place a competitive offer tomorrow that the underwriting dictates not placing a competitive offer.  

That said, my main question is, can you recommend a good mortgage brokerage company that offers all the training points you outlined in your post?

I would consider offering an incentive like a free application fee, or $50 off first month, free parking for 3 months etc.

Keep in mind local zoning laws and market conditions in Portland versus Salem—Portland might offer higher rents but stricter regulations, while Salem could provide better cash flow opportunities.Your design approach has proven successful, so continue focusing on appealing upgrades like kitchens and bathrooms, but prioritize cost-effective and durable materials for rentals.

Local banks typically offer lower interest rates but might require a solid track record and detailed financials.

Others are responsible with their budget and can stretch a dollar.If they are excellent renters, I would offer them the option to renew and let them make the choice.

I'll offer some free help and advice for anyone that wants to reach out.

I suspect an offer is going out this week on a >3000’ cabin that Garth brooks used to record in.

It Could help your offer though if the seller thinks he might have difficulty in identifying his replacement property within 45 days (he has 180 days to actually close on it) And it’s okay with you....you could offer to delay your closing for up to 30 days or so, to help him have more time in identifying his replacement property.  

Sometimes when placing an offer --  the POS is not yet available - and when you place an offer you can make your offer contingent upon approval of these items... although in order to have a competitive offer in this seller's market you are basically forced to "assume" the pos violations once they become available (usually 2-3 weeks after it's been ordered) -- you should be able to tell if anything more serious might come up on the POS via your own personal inspection.