You don't need an ITIN to purchase, but will need one prior to next tax filing season with IRS.  5.

Facts below:-3.5 month close to season downpayment fund source i will be using-$500 earnest money deposit-Current Valuation: $180,000-Sale Price: $170,000-Tentants in place, rented at $1290/mo-historical 1% vacancy

Nice covered front porch, open living rm to dinning rm, turn the basement into more living space, work shop, or just extra storage, detached garage works for multiple purposes.

My interest quickly grew beyond the short-term rental world as I listened to seasoned investors' testimonies of success at BRRRR-ing, flipping, wholesaling, and more.

(I have been reading books, cleaning up spreadsheets and preparing for tax season, enjoying my family) Is there more I could be doing?

Lots of investors use cash-out refinances as part of the BRRR strategy to pull money out after rehabbing and increasing the ARV, but generally need to wait a 6 month seasoning period if the capital they used up front was borrowed somehow (hard money, private money).

Try a different lender and the first question you want to ask is about their "seasoning" period. 

After I purchase another property and the opportunity presents itself, Is there any loop holes if I need to purchase another property before the seasoning period is up?

This "mindset" is what is putting newer investors in peril right now and over-leveraged, seasoned investors who wanted more doors to boost their ego.Long-time investors are cash full and responsible with their portfolios and are going to ethically navigate this time and buy the best deals.

One said as soon as you have leases in place I can contact him I dont have to necessarily let it season.