Would I do one if one came up? 

I own two homes in San Diego and one in Scottsdale - do I branch out or stick to what I know?

. $425k) to purchase a 12-unit Apartment ($1.5M) with 25% down ($375k from the HELOC).The remaining $50k from the HELOC could go into fixing/rehab of the 12-units.Then cash-refinance the larger amount from the 12-units to pay off the HELOC in one lump-sum (as much as possible), then using the cash flow from the apartment to pay off the rest of the HELOC.Repeat the process with a new apartment.1) Does this make sense?

However I call one of them explained my situation, currently starting, getting to know the value and look for lenders, however his answer was not what i expected, he let me know they are looking for investors with money so they can help them...So I was wondering If you have any advise/opinion/comment on;Would the fist step  be get to know to what financing amount I have access to, based on my employment and credit score?

It's all up to one's risk tolerances. 

Most HML lenders cap at 75k-100k minimum (with some going as low as 50k but I personally don't know one that can do 30k).

One option could be to buy out your spouse's share or vice versa.

Sounds like being super proactive by picking out a place before selling the old one is a safe bet.

I am looking to fix and flip and understand I will need one for hard money.  

DO THE PROJECT AND GET ONTO THE NEXT ONE.