The Solo 401(k) also has the advantage of being more favorable for real estate investments using debt-financing such as a mortgage - as the 401(k) is exempted from a small tax called UDFI that an IRA would pay on the percentage of income derived from the borrowed money.So, as you continue your research and get feedback here on BP, think about what type of program will best suit you needs and be sure to ask questions along that line. 

If you can get conventional financing, that would be ideal because the rate/terms would be the most favorable, but you would do each property separately (which is a better way to go anyway) and you would have to qualify full doc.  

It's not doing OP nor his CPA a favor to say "these are what your options are" when we don't know the facts and circumstances. 

Much easier with much more favorable terms to get a HELOC on an owner occupied property than an investment property. 

The favor would be greatly appreciated!

If the buyer has their attorney draft it then initially can slant it more in the buyers favor but also the buyer is paying their attorney more money to create the initial contract.

Hopefully your sales contract is set up in your favor.

This is one of the reasons a lot of investors favor shorter holds. 

Do I think prices will dip in many markets, sure...because interest rates are increasing and demand is coming on...this is nothing new, this is just the market cycle.We are aggressively buying and here is why demographics for our market (greater Portland OR) are very favorable, it is the most affordable major city on the west coast...even still with massive amounts of people moving in vs. moving out.The second reason is those interest rates...we are long-term buy and hold owners, so I WANT those lower rates, if I wait I might bet a lower price (or I might not) but I WILL pay higher rates or possibly not be able to finance at all. 

If you are purchasing property through a realtor chances they will put on mls as rental as a favor.