Went over budget and still counting.  

You've only owned it six months, so you probably haven't dealt with vacancies, maintenance, or capex, but you should be setting money aside for those things.Your partnership agreement (if you have one) should address exit options.

If in your shoes, I'd be sorting my marketing strategy, and jazzy ways to do my frunishings, marketing budget, how to Gorilla the hell out of it.

We have several vendor business members in the title space that are very investor friendly.

Buying a turn key rental, in an area you know or knew well, with a property manager you've met and trust, in an area that is large enough for you to have other options to find contractors and property managers? 

Have a clear budget and stick to it.

I have some guesses as to what the problem may be, but I need a good, investor-friendly plumber. 

As a new fix and flip investor lenders will typically want to see 20% down payment and will be able to fund 20% of the rehab budget (80% LTC). 

Are there other creative options I haven’t considered?

OC California is very expensive so investing out of state can be a good option.