I don't think its unrealistic - the bar is just very high for what you want to do. Perhaps it may make sense to talk to people who would be looking for such an

I don't think its unrealistic - the bar is just very high for what you want to do. Perhaps it may make sense to talk to people who would be looking for such an integrated skill set and find out which ones matter more than others and to what degree/level. That will give you an automatic prioritization of how to go about getting these skills without becoming overwhelmed.