Hi Nicholas,
First, I think you made the right decision in switching from buy & hold to fix & flip. Also, I completely understand your reluctance to move from San Diego - I visited over Christmas break, and it was wonderful - I saw a lot of new developments coming up, restaurants opening, families playing in the parks, and there are a lot of transplants from all over the country. Factor in the great climate, the relatively cheaper prices than neighboring Los Angeles.... As an economist, I think San Diego is one of those metro areas that will continue to grow, and with it, so will the demand for new homes from flippers such as yourself.
To your original question, usually the ideal timeline is as follows:
1. form an LLC for your REI projects,
2. identify the HML you want to work with,
3. establish a relationship with them (e.g. we do an integration call with all our new clients where we establish exactly what their goals are, whether and how they can achieve them with us, etc.),
4. find your property,
5. quickly check with your HML if their numbers match your estimates, and if yes (i.e. if your HML will fund that deal), make an offer on that property.
@Lee Ripma makes a great point about forming an LLC - it's not always required, but it is definitely advised, not just from an HML perspective, but even generally for your own protection - why put your entire personal wealth at risk, when you can easily protect it with the LLC. Especially if you get into REI full-time, there's always the potential for a lawsuit, or other legal expenses, and it's best to minimize the risk of those things hurting you where they don't have to from the very start.
To identify your best HML, I would recommend both networking with lenders at your local RE meetings (the way @Justin R. suggested), and reaching out to established HMLs from BiggerPockets' database for California (as suggested by @Sean Walton), which you can find here:
https://www.biggerpockets.com/hardmoneylenders/cal...
There are not that many, and it pays to connect with all of them, shop around, see which ones work best for you.
I hope that helps make the timeline more clear!