After deep-diving into research about what wholesaling is, I've realized if successful it could be a great gateway to acquire the capital I need in order to buy other properties in my market.

You're correct in saying there is no "right" way to do it, just what is most comfortable for you.Personally, I'm a fan of Hard Money to acquire the property.

Cost of construction is high and you may be paying extra to match 2024 building codes rather than a remodel/addition.

I'll add it likely will make very little difference to the overall appraisal price given it's a 10-unit.

The most common beginner-friendly strategies include buy-and-hold (acquiring properties to rent out), fix-and-flip (renovating and reselling), and house hacking (living in a multi-unit property and renting out other units).

I wanted to see about an additional income stream with turnkey flipping( rehab a unit and sell with a tenant) and possibly keep some flips in the process (a BRRRR style if you will).

What did the additional cash invested go towards?

It takes me anywhere from 2.5-4 months to acquire, renovate, find a buyer, and have them close on the property. 

The rental use alone won't create a position, but it isn't a bad additional fact to have.

SoCal is getting a lot older and most 20 plus old homes need updates and perhaps a value add addition.