As someone commenting from their experience as a Spanish national and someone familiar with both markets, my goal is to share perspectives based on my personal and professional knowledge.I understand that you have a different perspective, and I appreciate you sharing it.

Readers should seek professional advice.

Readers should seek professional advice.

Have you been pre-approved or are you paying cash?

Michael,   A good book to purchase is "Professional Real Estate Development: The ULI guide to Business.   

Then build a team of professionals around you and take action. 

Warranties often have limitations, like they might not cover pre-existing issues, and there could be delays if they require you to use their contractors.I'm not sure if you've purchased a warranty already, but before purchasing a warranty, it’s a good idea to carefully read the fine print to see what’s covered and if there are any exclusions.

You're still leveraging his network/connections/professional experience.

Readers should seek professional advice.

You put a 3.5% down payment on a house that goes up 7% in 12 months you just made a 200% return that didn't take any large amount of skill or time.