Is a down payment typical, or does that really just depend on the deal?

It all depends.

Doesn't the cap rate depend on the price, as well as the price depend on the cap rate?

It is very important to file an extension by the March 15 or April 15 deadline, depending on whether you are a business or individual, because not filing an extension will result in a 5% per month for failure to file penalty, but it is equally important not to file a full tax return if your exchange is not completed by the applicable filing dates referenced above.    

Depends on form.

If they answer 'yes' or something similar you have a couple ways you can make that happen, depending on the underlying mortgages on the property (explained briefly below). 

Learning where I'm wrong will ensure I find success when I get started. 1.Purchasing Plan + Time Frame (10 year plan)a.Year Onei.Purchase Quadplex1.Owner-Occupiedii.Roughly 20191.Greatly depends on Savings Plan successb.Year Two - Fivei.Purchase Quadplex1.Refinance Year One Purchasea.Cash Out to buy Year Two Quadplexii.Rinse, Repeat Strategy of Refinancing1.By Year Five own 5 Quadplexes (20 units)c.Year Six - Teni.Purchase 2 Quadplexes per Year1.Refinance Strategy2.Earned Income from Workinga.Only if necessary to stay on paceii.Results in 15 Quadplexes1.60 unitsa.Rent Each at $750i.Gross - 45,000/monthii.Gross - 540,000/yearEven if I pare down to 1 property a year through Years 6-10 that would result in 40 units40x750x12 = 360,000/yr Gross Income.

Plus you have HOAs, and depending on where in our area, they can be boogers.

Their rates are 6-8% depending on LTV and credit rating.

Your resale target will vary depending on if you want to rent it out after rehab or sell (flip) the property.Would not touch renting back to them with a ten foot pole.