You do really, those MG can cause a lot of problems very quickly. The important thing is getting guns on the enemy, I could carry 10 cannon but If I don't get to fire them they aren't much good. I would swap your FM for 4 guns if you like? You're going to lose some friends in combat though
Galland flew an E4, Steinhilper whined about it in his book, complaining that 'the Spaniards' got all the best stuff. I'm pretty sure Galland complained about losing a cannon for the F model and refused it, preferring the E4. In his book he says he asked for Spitfires to wind up Goering but was clear
he preferred the 109.
Let's face it, 1C are doing a terrible job.