This is a fairly good starting point. Most of my generalist ships have the same sort of weapons. Where they differ is that they have two or three fire-control systems. One at basic range and x4 speed (4hs) and one at double or tripple range (based on weapon range) and 1.5x speed. This is a total of 10hs which is better than the 16 for you setup. I also often put in a x.25 range, x4 speed as a backup for point defence. As this is only 1 hs it doesn't take that much room and gives a ship a chance to shoot missles down at point blank range.
Brian
I agree that for fleet final defense, basic range and 4x speed is good. And that for final self defense .25x range and 4x speed is all that is needed.
But, if your going for area defense don't compromise on tracking speed. If the incoming missiles are traveling at 12k/kps and your fire control tracks at 4.8k/kps before degridation the saved space, in my opinion, isn't helping if your installation is ineffective.
My intent with the heavier fire control is to provide at least 2 shots at incoming missiles that have a good chance of intercept. The reasoning being if I can force the OpFor to dedicate heavier offensive weight to overcome my defense, at the expense of thier own defense, then my offensive missiles have a better chance of reaching thier target.