Posted this as a variant of the lurm boat mk1, but I've been loving running in this. basically you have the delicious LRM30 raining down on your opponents, then the lb10x + 2ml lets you deal damage to anyone who comes within sight, and discourages those pesky lights. stay with the pack, but near the rear, and choose your moments and you wont be disappointed. ok so you don't want to brawl, but your not defenceless either....... as a last note, used well you can really kill steal too!
I'm a big fan of secondary weapon systems on mechs. Especially specialized mechs like an LRM boat or a AC20 brawler. With the AC10, I usually run with 2 tons of ammo and hardly shoot that out. I think you can drop a ton of LBX ammo and get another ton of LRM ammo. I have shot out 6,7,8 tons of LRM ammo in a match. Its for that reason I like to have something else on the mech to use when I'm out of ammo. Usually, I like two large lasers if I can mount them. Anything that does around 20 pts of damage really. My HBK-4J LRM boat packs four medium lasers for that exact reason.