So please spare us the, "No one knows everything" bit.

You still have to be sparing with it though...do what is in your best interest and don't give people A REASON to impact your livelihood because of their jealousy.

Another person suggested 'extortion' (which seems quite strong) ... deal is, these folks could really use some sound advice as they do NOT have the money to spare in a questionable transaction and I have no experience in this area.

Have the alarm notification happen enough in advance so that you can get a letter out with time to spare.

No expense was spared by the former homeowner.

It's been three months since I decided I wanted to do flips in my spare time.

You are all-in at 78% of value and your exit value is questionable as well.To fill in the pool, you will need to get a permit, have enginerring and soil compaction tests, and any other requirements the city/county demands.

I'd much rather them have a spare than call me at an inconvenient time saying they lost their keys and are locked out.

Spare the rod, spoil the tenant.

Cracks in concrete are normal to some extent though usually caused by an underlying issue such as insufficient compaction of the gravel underneath or improper drainage causing excess water to get under the slab and undermine it.