I'm currently working on a income producing quadplex deal in Tampa, FL in which I've convinced the seller to carryback 40% of the purchase price.

If I had to do all over again, I would buy in areas that attract better quality tenants.Personally, I would never go under 1% unless I was very confident the area is going up in value.  

Taxes 3,350Ins 1200 (guess)Rent 1100-1350 (most likely section 8)60k purchase5k rehab (simple cosmetic to attract better tenants)Cash purchase, cash out loan after.

Once you identify what the potential exit strategy is structure terms that will solve the seller's problems but would be attractive to your end buyer. 

I believe that cap rates are important and cash flow is king.My thought is that constructing a new multifamily property will be more attractive to renters rather than offering an existing 'older' unit.

Please don't pay anyone up front for leads, unless they produce and even then be very cautious.  

I've seen sellers simply get any tenant into a property so it looks more attractive.

Depending on your market, you may find more attractive deals with less risk.

They only lower their opening bid to attract bidders.

There really isn't a great reason to go through an intermediary platform if you're able to attract the capital you need on your own.