If you are looking for the nutrition info for venison, go to the USDA food database site: ndb.nal.usda.gov/
Type in the word, venison, and you will find several entries, info on ground, steaks, etc.
It is a healthy lean meat. However, since you are currently added a great deal of fat to your product, you will need to adjust the nutrition information. You are turning your lean venison into a very fatty meat. The SP recipe calculator could give you the specific numbers for your blend.
regarding the other "health benefits", you really do not know---for deer are running wild--grazing mostly in grain and hay fields of farmers. It would depend on what foods they are eating and the farming practices and the water sources being used by the deer.
SP Dietitian Becky