We make choices every day. They need to be informed ones. President Kennedy said: “We choose to stay with the comfort of opinion rather than the discomfort of thought”. A recent discussion with a seller made me realize she needed to become aware of misunderstandings which could happen by her not understanding Mexican immigration and tax requirements.
Just Do It! You have found the dream property, and you want to make an offer. Everyone involved is very friendly and seems very nice. You trust your new friends, and assume you have protections in place to prevent you from having problems with the purchase. Due Diligence is necessary, and your responsibility is to require it before becoming committed to sending money or being bound by a contract.