Whether it's building wealth over time, generating immediate cash flow, or a mix of both, let your financial goals guide your choice.All the best in making a decision that aligns with your vision for the future! 

Also, most seasoned commercial agents don't want to deal with non-experienced agents trying to do commercial.Also, why did you say mixed-use in the heading? 

I plan to use the $800K to buy mixed use retail/MF, or just MF property(ies) in Northern NJ/NYC 4 boroughs minus Staten Island. $800K would allow me to access $2.6M+ worth of RE. 2.

The only way you can mix any of those together is to be a real estate professional. 

Now you have thrown another item into this mix, a third lien.

However, I'm seeing lots of mixed opinions on what contracts to use.

Most commercial, mixed-use, office, multifamily res, and small industrial uses permitted. 

However, you can’t deduct any loss of rental income for the period the property is vacant.I’ve gotten mixed answers on what to do.

I ended up with an additional $131K credit on a sole proprietorship (they couldn't/wouldn't/didn't work with my existing LLC) across 4 cards, all with 0% APR for between 6-12 months with a mix of balance-transfer-only and purchase-and-balance-transfer restrictions.That being said, the results were less than exciting.

If your going to be mixing all of these accounts and then going for a self directed roth IRA later, this will apply to you.