.- Is there a kind of person who could help me with pre-sale improvements (roughly saying, to tell me what is worth replacing, improving, etc and what is not,1 to make the house more attractive for the buyer)?

We’ll only consider additional debt when it maximizes liquidity or improves risk-adjusted returns.

With strategic upgrades, we modernized the property, improving its value significantly.

Yes, they do come at a slightly higher purchase price/downpayment than C class rentals, but I’ve found it to be worth it because of the improved tenant quality. 

Ensure the appraiser accounted for things like the square footage, recent improvements, location benefits, or other factors that impact value.

For capital improvements, get a good handy man (i.e. not through property management).

Reminder:Ground improvements qualify for bonus depreciation.This includes various landscaping.Roads and external parking areas.Sidewalks and pathways.Fences.Utility systems (including the installation or improvements to water, sewage, drainage, and electrical systems).Outdoor lighting.Rec facilities (like playgrounds, sports courts, and swimming pools).And more.It's a big category for depreciation/bonus depreciation that we love.

More of an "If... then" vs.... here you go.Instead of solving the end game, improve process. 

That 40k class would not teach you to put nail to the drywall.In my actual job i am so very busy writing code for DATA CENTER like Amazon or Google data center, so I do NOT have time nor knowledge to put a nail in the drywall, but i have TRUSTED friend that can put the nail in the drywall.There are just so many RESOURCES here in BIGGERPOCKETS where one do not need to go to any school but can learn from them or they can redirect to the right people.As for me , my life in real estate context has DRAMATICALLY IMPROVED when I CONVERTED my business relationship into much PERSONAL RELATIONSHIP to the contractor.In flipping business, the contractor, the subcon , is like the Prophet, okay, they have to be listened and being served.

It can be done if you have the energy and drive to push forward.