He just texted me and said he’s been cleared to go back to work but that his wife has had to stay home with the kids (not sure why both of them had to be home, but trying not to be suspicious).He mentioned in his text that “money is tight right now for sure”.

I am very suspicious of sales prices since many might be a contract sale.

You should report this to them.It is suspicious though, since he posted a solicitation for representatives for a private lender in this thread: Do you want to work from home and earn a salary?

Got a scam email today about some "suspicious" activity with my ATM..... weird purchases at Best Buy , gas station etc.......

Of course if I go to him with al of these questions he will likely be suspicious and shut it down right away.

As @Brandon Turner's book highlights, you want to look out for any suspicious answers during that initial conversation - i.e. someone who needs to move "ASAP" and seems to be in a hurry could be someone who is running from their current situation. 

The IRS is going to be very suspicious if you claim that you do.I'm no CPA and tax rules often have nuances that aren't obvious by just reading the rules.

I also received a suspicious email in BP proposing that they could lend me at 4%.

It does seem a little suspicious.

He is also very suspicious... parks very large vans (about 4 to 6 at a time) in front of his property and on his driveway to cover the house, has cameras everywhere, is hanging cloths from his patio cover so no one can see the inside of the house, etc.