Then, when I have a property and making offers I can make an offer based off their specific needs.

Even then, the corporate ladder is usually pursued after promotion with career aspirations in management. 

Can I write off any of these rehab expenses on my taxes?

This is far better than refinancing if you can pull it off.

Your post comes off as someone who made a very unsophisticated deal to try to make a tiny spread and wound up incurring costs and liabilities they didn't anticipate.

In my situation I also have built in tenants that would move with me and would become rent payers off the bat as well.So with these high price los angeles homes. 

I've got the money but need someone older to partner with to pull this off right now."  

I was planning to do a single meter panel combo 200A and feed the ADU off that but I'm now trying to figure out whether I need to have a separate meter because if I don't do it now I'll probably have to rip it all out later!

If your goal is to acquire additional investment properties in the future, you are better off starting out with a traditional rental, whether single family or multi-unit, compared to a vacation rental or Airbnb, where the income potential might be higher but won't be used to help you qualify to purchase other properties in the future.

This deal is based off a real tax deed auction property in FL:1912 Sq ft 3/2 SFH in Bay County- ARV: $415,101- Estimated Monthly Rent $2,984- based off 6 comps within a 1 Mi radius.- Adjusted Purchase Price/ Max Bid: $210,840.80- I start with the 1% rule (thus why I start the analysis by looking at rent) and then adjust the price based on the potential pay-out from a cash-out refi and equity position on the property- more on this in a second. - Potential Investor payout (15%): $242,466 - Rehab total: $76,480.00- I just used $40/ sqft for an estimate.