2) Time spent by others: to qualify for the test "100 hours and nobody spent more time", how do we track the time spent by others and what proof would be required in the event of an audit?

You only need a place to track tenant information, payment history, maintenance, etc.

Life has thrown you some curveballs, but you’re already on the right track by focusing on learning and planning.

Notice that I'm not saying "Sponsor who makes me money" or "Sponsor with great track record".

.- I am also told that a few portfolio jumbo investors will go for it, provided you can go back to when you invested in the bitcoin, and show the US Dollars clearing your traditional bank account, however many months and years ago that was, and track every single dollar going into it from a traditional depository institution along the way. 

You only need a place to track tenant information, payment history, maintenance, etc.

I've seen investors allocate 5-10% for capital expenditures (capex) and vacancy, but you won't have a clear understanding until you've owned the property for a few years and established a track record.

While I understand your concern, repeated reminders can feel a bit pressing and unnecessary. we have to track the source of leak source first.fix the source of leak if is coming from our aparement wait sometime to make sure there is no more leak and repair the ceiling

Key Market Movers and How to Track Rateshttps://www.biggerpockets.com/blog/2024-dscr-loan-rates-and-...How Do DSCR Lenders Calculate Your Interest Rate?

They can help you save time and fast-track your learning, rather than starting everything from scratch.