You can allocate those proceeds any way you want - as equal down payments or buy one for cash and others with loans - It doesn't matter a bit as long as you use all of the cash and purchase at least as much as you sell. 

You have a bigger loan, but not a bigger tax basis.

I have gotten a few loans through Kiavi.

DCSR Loan

My in-laws loaned us the total purchase price minus $5,000 on a 3% interest rate.

Almost every realtor has several investors ready to invest at least $2 million in cash.If you’re planning to use hard money loans, agents won’t show properties without prior proof of funds.I’m curious, is this a general market trend in Ohio or just this particular realtor’s approach?

Get a 50% LTV loan and buy another property just like the one you own. 

But we are also both very used to corporate and used to having a security of a job.

I'm considering using hard money lenders or DSCR loans, but it seems like DSCR would be a bit complex.

If scaling quickly is your goal, DSCR loans are a great tool for the refi portion since there’s no 12 month seasoning requirement like conventional loans, and DTI isn’t a factor.