Neat build. LRM boat all the way. 3-5 stars for not taking advantage of JJ or AMS, but it should be fine at it's job.
My take on this: 2 x JJ's, more ammo. Removed lasers. Only thing I would possibly consider is AMS and dropping a little ammo.
It's a good idea to bring your own TAG, especially since you get no benefit from Artemis without line of sight. Also leery of running a 'mech with less armor than a ' mech that's 15 tons lighter.