I spent hours last night (sure seemed like it anyway) micromanaging a really long fight. I had three battlecruisers versus something like one hundred smaller, disparate ships. I was both faster than them and my weapons outranged them and I was able to kite them, slowly whittling them down while they could not fire back. (Maintenance was my undoing, I ran out of maintenance before the enemy ran out of ships, and I had to retreat.)
I did notice however that having more beam fire controls than absolutely necessary proved to be a handicap, as I had to manually designate a target for each fire control. If I had grouped my similar weapons under single fire control, I could have significantly reduced my micromanagement time. My battlecruisers are now in refit to 'remove' fire control systems (and add some maintenance stores). More battlecruisers coming off the line soon. Hopefully, my 48 FACs will be enough if my enemy counter-attacks.