Would my small down payment and "sweat equity" be worth 50%, or am i just dreaming?

I'm thinking that after selling I'd keep 50% of the profits for "sweat equity", and give the other 2 silent investors 25% each.

Acceptable sources of down payment include:Borrower's own funds: cash, savings, checking, retirement accounts, etc.Gifts from relative (blood or marriage), employer or labor union, charitable organizationSale from previous home, trade equity, rent equity, sweat equityGovernment grants and loansThe following are NOT acceptable sources: seller, real estate agent or broker, builder, associated entity, lender.

I had some sweat deals but am now officially jealous!

They are typically not going to do the work themselves for sweat equity.

Find someway to bring value to their investments (your engineering degree for example) either by providing some financial equity or sweat equity.

Beyond this, there is definitely some work that needs to be done to the property, nothing major (yet), just some good sweat and labor to fix some water leaks, make the place look better, replace boilers, etc. 

I am trying to get other Ideas also on how to purchase a property with $0 cash down ( yes I am willing to do a lot of sweat equity and other tasks)

Count on finding one heck of a deal, limit your risk through wise decisions along the way, and don't sweat the timing as long as their isn't a red flag. 

They also probably have some credit card debt (amount unknown).They are okay with getting 45k for the work they did along with "sweat equity" and "emotional" attachment.I'm sure there are a ton of you thinking: RED FLAGS!