Mixed-Use Retail/Residential property

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Thru a 1031 exchange I want to invest in a one unit, mixed-use, retail/residential property. I need roughly 120K loan and can cover the 20% down which I understand would have to go thru a commercial lending program versus residential. I want to be able to access this equity for second and third investment property which may be single family/multi residential.

How do the rules change with commercial lending?
Will I be able to access this equity similar to residential HELOC, etc.?
Are there lenders on with traditional loans that deal with multi-use?

JimW