The alternative would be to only pull $100K or so out of the property, it’ll still cash flow a bit, and you’ll have some money for other investments.

@Gregg FarrautoIf you are unable to qualify for bank loan working with IRA investor might be pretty good alternative.

Are there other alternative methods I can utilize to acquire this investment property?

One thing that could be helpful is to find a realistic alternative to the property and clearly tell the seller (through your agent) that you will walk away if they won't come to the negotiating table.

In the alternative/non-QM/Private Money sector seasoning is usually 90 -180 days, while conventional is 12 months. 

IT isn't the loan that makes an investment good or bad, it is the property for the most part and how it compares to your next best alternative, which in most cases is your current living situation.

If you have the funds to pay cash that is an awesome alternative, and you will save yourself the money in the long run.

What Is your opinion on HELOC on the unit or other lending alternatives once we get some rents coming in?

(alternatively, it is in case they ghost you and to protect against fraudulent claims from subs that never worked your site)GC must name you as additional insured on their insurance. 

As an alternative try to look for brokerages that charges less fees instead of going with a big franchise company, especially if you're looking to use your license for your own investing.