Their site looks nice and pretty transparent, although the FAQ about pre-payment penalty is a bit vague. 

It's been steadily growing in terms of population, rent rate and appreciation. 

The only options that I see are rent by the room, mid term, short term, or just putting more money down.

Trying to figure out what their pain point is to see if terms might help. 

My goal in the long term is build up enough equity/extra income to retire at 50.

My goal is to at least match my current monthly expense of $3k (After all units are rented) while aiming for long-term appreciation.

Lightstream is the most famous, but the longest term they lend is 7 years.

@Nick Pamintuan I would start with understanding what each of the six partners (including yourself) bring in terms of value to the partnership.

Though it is a negative cashflow move in the short term, I fully anticipate rental rates to catch up to the expenses in about 3-4 years and break even monthly.

My investor friend has a lease option on my property to assume my mortgage and property so she can get the terms, while giving me $30,000 over two years for the option to assume my mortgage and property.