I think to some degree you should play it by ear. I know that I will never again decide I'm bulking and start drilling 4500cals per day. The majority of gains end up being fat. From now on I'll creep up from the low 3000s. Since you are already on cycle, it is too late, but I would ideally start feeling out my body's response in the weeks leading up to the cycle.
That being said, I'm sure you'll be fine. 3700 isn't absurd, and consensus seems to be that high cals allow you to maximize efficacy of superdrol. Just watch your waistline. You may gain 15lbs, but if 7lbs are fat and you lose a few lbs of LBM cutting those 7lbs, you can easily end up exactly where you started. It happens to tons of guys.