If you do a joint venture you cut your profit by HALF?? I would think thats a hell of an opportunity cost to pay just to avoid interest payment and the risk of not selling.
Ok, you have 2 interelated risks/fears: not getting a sale & interest accruals...
I would take my loan in bits as I utilise the funds, get a credit line if possible...
Phase out the project, start with one unit... eg. you can be roofing one as you do the foundations for the next...
Start selling as you build... better yet, sell before you build... start selling now!!
If you do a good project plan, your debt exposure at any time is limited to between a quarter to a half compared to going all out...
If you find yourself in a situation where you have 2units completed but no sale, you can always pause the construction... again controling unecessay debt exposure... get a good & binding contract with the contractor that will allow you to do this. The contractor will not be happy with this, he'd rather control the project and get paid on his own schedule, squeeze the guy b4 u give him the job!
You have all the cards... you're the enterprenuer... you have no professional role to play in this project... your only role is to bring together resources (capital, legal, technical etc.)... your only goal is to make money...
Get someone who can do the job better than you, tell them what you want and let them do it (your way)...
get a good architect
get a good lawyer
get a good contractor
get a good banker
get a good sales agent
If you can put all these guys together and negotiate the lowest possible price for their services, you are home and dry...
Why Partner when you can Employ... you can always fire an incompetent or fraudulent employee if you have a good written agreement in place...
DON'T SHARE.
"I'd rather be lucky than clever... every time!" - ME
"The problem is not what we don't know... it's what we know for sure that just ain't!" - MARK TWAIN
"Space we can recover... time never!" - NAPOLEON BONAPARTE