I need better timing if I plan on buying 6 per year.

Are you planning on investing heavily in the property to make it nicer and potentially drive up the rents?  

Which is a great goal if you’re planning to scale a portfolio or start a co-hosting or property management business like I did.  

I plan to do another round of calling banks soon to try to secure the HELOC.

I plan on asking the tenant below soon if she notices large differences from the full carpet that was installed before.

What I'm planning to do is write a lease as normal, but have the tenant and the rep from the company both sign it.

It sounds like you have a plan and are going forward so I wish you the best of luck.

In your situation, you can plan to minimize your losses or to trigger passive gains to absorb these losses.

You need a specialty provider firm specializing in these types of account to set up IRS-compliant plan for you.Solo 401k plan is not for everyone, you must be eligible in order to establish one.

Unless every applicant can qualify for the full mortgage it sounds like a really bad/risky plan for the lender.