There are quite a few solutions out there so that even the most tech challenged person can pay electronically.

Challenges?

I would try to verify the negative information and if in fact true, then it would be a pass for me.

Not true. 

these tenant friendly laws seldom matter because the vacancy is so low the tenants want to stay in their units and realize an eviction will make it challenging to ever find a quality rental in this market.  

When the cash flow is too good to be true, it always is.

If you are planning on living there (ie in 1 unit) then you are house-hacking and this is a different calculation consideration then renting out both units and making it a true investment.

Challenges?

Holding LTR in san diego on a new purchase is challenging not to be large negative at high LTV.  

That experience taught me to always overestimate CapEx and vacancy buffers... it’s much easier to sleep at night when you’ve got those cushions in place.From what I’ve read in Bloomberg, these challenges aren’t unique, especially with rising rates.