Then use Airbnb profits to pay off any remaining investments over a short-term period (3-5 years)Take out a separate mortgage and buy the family out?

I know the home insurance has gone up in the last few years due to weather, but didn't expect it to go up this much.... our estimate was $2200 for home insurance, and it seems like it has gone over that .... we are also out of option period so we probably cannot back out of it now ... 

Any advice on how to invest my money in real estate while being the most efficient?

For the 10 year period spanning June 2014 through June 2024, single-family prices in Austin nearly doubled, yielding an annualized appreciation rate of ~9.3% in that period.A 30-year fixed rate mortgage is sitting around 6.85% interest.

@Tonia Butler KinseyLet her out of the lease but have the same notice period of 30 days etc.

The builder is unwilling to take the responsibilities of the damage as the warranty period has expired and mentioned that they obtained all approvals including 3rd party inspection before closing.

Get into the property with cash and refinance on the back end with a commercial loan that doesn't require a 12-18 month seasoning period.

The benefits to using available cash to fund multiples investments as opposed to paying all cash for one investment seem pretty self explanatory, but the largest benefits...especially in real estate...are likely the ability the spread risk across multiple investments and the ability to make multiple investments in a shorter period of time, allowing your cash flow, equity, and ultimately potentially your net worth to increase at a faster pace.To answer your question about traditional financing directly, yes you can obtain a traditional mortgage and put a large cash down payment down, essentially financing 'part' of the purchase price.

I know I can probably house hack my way to 5 properties in 5 years, but I assume I'll probably learn more efficient and aggressive ways to scoop up more properties as I complete my 2nd-3rd house hack, so that I can start picking up more than 1 property per year.I don't want properties that will take a lot to fix up, I'm fine with cosmetics and do-it-yourself type things.

For SB1079, a prospective owner-occupant can bid on the property post-sale and win the auction within a 45-day period.