RIght now if you are just sharing the profit and loss per capital percentage, you dont need a complicated agreement. 3)Looks Like your lease on the condo is about the expire, so based on your situation, if you could live there for few more months, you could qualify for section 121, if not 1031 is always there. 

You could go on title with the owner as Tenants in Common on the deed, or secure an option on the property for a percentage of the eventual sale, or use a Joint Venture contract.

Then figure out if the deal still makes sense if the value drops that much (by percentage) the day after you buy it, or 2 years after you buy it, or 5 years after you buy it, or whatever.3. 

What percentages of your income do you invest in each?

I pasted the results here and then just typed in what percentages I used.

The percentage of people who are self employed is down since 2006 (now 6.6%) but I feel these is a increase in work from home / mobile workers.  

There will be tax implications based on the percentage of your gains that are attributable to the borrowed amount, so you'll have to have your CPA guide you through that.

The percentage depends on the deal and the type of deal it is, whether they're lending on the asset (purchase price) or the post rehab ARV.The asset based lender will lend around 80% of the purchase price (after their own appraisal of the value), leaving you to cover the remaining 20%, any closing and carrying costs, plus the cost of the rehab. 

What a tenants responsibility is with CAM and percentages will vary based on what is in the lease.Some have CAM STOPS each year where the tenant pays only a certain amount and after that the landlord pays it.

Somebody suggested that I get a co-signer and just give them a share or a percentage of the cash flow.