Also, you can always cashout refi them AFTER retirement and get that money tax-free (until you sell or transfer via inheritance).Recommend you read The Millionaire Real Estate Investor, which shares the plans of several different investors.

So not sure if this makes any differences for tax reason buti was thinking of using my 401k money as a loan towards the down payment for a multifamily rental.

But the official position of the IRS is different. 

Depending on your tax situation the timing of that deduction could make a big difference especially for rental property because there's no phaseout on deductions like there is for itemized deductions for your primary residence.

Definitely slow down and get a handle on the hidden costs and benefits in a few different options. 

Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.When investing in areas they don’t really know, investors should research the different property Class submarkets.

If you can't find one, consider investing in a different market.

It would be a totally different story if I was out there.

I am scheduled to look at a property this weekend with this one being different compared to others I’ve viewed in that it was built in 1900.

I'd say understanding the quality of different builders is paramount, so you understand what you're buying.