I used my uncle to set up a Joint Venture and then sold my shares to him.

I would not recommend joint tenancy or any other individual names, stick to the LLC

The issue I'm discovering now is that, when I go to apply for a mortgage once I have completed this live in Reno, my debt to income ration will be too high.The solution I was planning to do is to add myself to the title of her home as joint tenancy and rent it out, at which point, I could claim 75% of the rental income towards offsetting my debt to income ratio, which would likely qualify me to obtain another home loan for another personal residence for my family to call our actual home.Does this seem like a sound solution or am I missing something?

Since the the LLC is owned only by my wife and I and the previous property was only owned by my wife and I, at a federal tax level, there is no difference in how it would be reported on our taxes since we file jointly. 

Or to truly get some expertise behind you for credibility and build a brand, work with an attorney and draft up both the promissory note and a joint venture for good measure.

I do work for a company who has an LLC that we may joint venture on projects. 

My partner @Paul Dante Pronio and I are forming our first joint LLC and have a quick question about EIN filing.

A couple things to consider would be to possibly move car debt, personal loans or cc debt over to your husband (assuming you aren't joint) to loosen up your DTI.  

Is it possible to Buy a property where one owner takes out the loan and the other owner gets 10% of the property.  How would this be done?

Enter into joint ventures "very cautiously".