I was thinking about this and am guessing the raw numbers of #rushes vs #passes are likely skewed due to among other things, sacks (pass plays that are ultimately scored in the rushing stats) and garbage time running out the clock plays. As someone already noted scramble plays when the called pass play fails also inflates the perception of more running plays being called. I looked at 2 other sets of numbers, yards from rushing/passing, and TDs from rushing/passing with Butch's offense.
Yards
2016 2668R 3100P
2015 2908R 2582P
2014 1903R 2914P
2013 2261R 1979P
2012 2619R 3104P
2011 2321R 2699P
2010 1880R 3128P
2009 2357R 3577P
2008 1738R 3767P
TDs
2016 31R 28P
2015 32R 17P
2014 20R 23P
2013 18R 12P
2012 25R 25P
2011 28R 20P
2010 15R 27P
2009 29R 28P
2008 19R 28P
So to the OP's question, I think play calling will probably be well balanced but the numbers in the final stats could be skewed by a number of different variables. Another question that might be asked is given our personnel this year and given our list of opponents, do you thing we will likely be more productive running the ball or passing it?
With so many questions yet unanswered, if I had to bet today, I'd go with passing, regardless of which QB carries the load. That doesn't mean I think the stats will say we called more pass plays - just that I'm hopeful for our pass protection and I like our QBs and Jennings, Byrd, Wolf, and Calloway. Production in either phase is impacted greatly by our personnel among other things and right now I like our pass game talent more than our run game talent, admittedly, not much of either yet proven. jmo.