The idea is very interesting!
The choices probably lack some depth, as most of the times you just have to alternate between the 2 as choosing the same twice will cause an imbalance.
Also there is not really a point in the +/- values as you achieve victory by just going long enough without a conflict, regardless of those values.
I can totally see this is probably due to lack of time becuase of the Jam, but I would be very curios about how this idea develops further with no time restrictions :D