Reduces both the Lender and your exposure.7.Terms-Traditionallenders will only loan out to 3 to 5 years.

Having over 80 doors is not so bad with zero debt, All the best That means:1 - You like losing money by leaving it on the table,2 - You like to pay full price for a property (even if you get a deal, paying all cash is paying full price)3 - Minimizing future appreciation gains by sticking all the cash in one property,4 - Maximizing your exposure, and thus maximizing your risk,5 - Lengthening the time it takes to turn a profit,6 - Paying to have a tenant, instead of having the tenant pay you,7 - Minimizing the value and buying power of your cash,        ...there's more, I would have stopped at #1. 

Most lenders who do these types of DSCR loans, do not have exposure limits at all, do as many as you want and they won't impact your DTI for conventional.Cheers!

You won’t get them any extra exposure by keeping it off market.

Exposure = Value  

We'd travel to A.) see the country and B.) learn of the RE. opportunities that exist outside our basic/brief exposure to RE investing so far.

One thing I like is it gives me some exposure to syndicators I had not met before, some that are a little bigger and more sophisticated and been in business a lot longer than the ones I've met organically.   

You are thinking way too far in advance.An investment property purchased now in most likeliness will not be generating positive taxable income given high purchase prices and high interest rates.Have a talk with your CPA to ask them what your tax exposure would be if you mentioned to him your purchase price, monthly rent and basic expenses like insurance, interest and taxes.Best of luck!

In summary, I'd say start off with the strategy that is simplest, easiest, has the most upside, the least exposure to downside, and therefore the highest chance of success--which, to me, is probably option #1 (especially if you combine it with a house hack, or at least have the option to house hack it).Good luck out there!

@Mike Hege  Based on my experience and exposure with new construction here in Charlotte, I would be skeptical of that $70/SF as well.