The dept of finance has my estimated gross income over 150k then what it really is.

Should I ask for a deposit in their daughter's US account?

I plan to invest here soon and wanted to share some information about the market, rental income, or even general talk of the area.

If I didn't want any more rentals (or had no more borrowing power as I was maxed out), I'd still probably save that money as I can earn more off interest in a savings account than I'd save in interest as my mortgages currently have low interest rates. 

If that is the case, i would not recommend trying to "add your wife's name to the account" if she's not on the bank account.

This is why we accountants should not give legal advice and - vice versa - attorneys should not give tax advice

You have a steady income from w2 and cash.

If they are going to be there post closing, at minimum have your agent do a final walk and take photos and video as you will now be the landlord and responsible to hold them accountable for any damage, so document.Once you get it up as a STR, you should go at least once a quarter to make sure cleaners are doing a great job and make any needed repairs or adjustments.

I could pretty comfortably afford my monthly out of pocket payment due to income and help from my partner. 

It's crucial to understand the financials and market trends to gauge the potential value of a property accurately.One key aspect is the cap rate, which is a big player in determining a property's value based on its income compared to its price tag.