Almost certainly a garbage build, but on paper it can work... Theory: -5% ballistic cooldown means ~2.1 second AC10 cooldown SRM2+A are ALMOST pinpoint: they should land almost exactly where you are aiming. -10% missile heat generation will help, plus they have ~2 seconds cooldown, which pair up well with the AC10. So, you should use the AC10 as a "early defensive DPS" (don't even bother trading, you will probably lose) but the main focus of this build is "pinpoint brawl": you have a fast engine, you don't mind if you lose a side torso and, most importantly you have huge nice shield arm to soak up some damage. I'll probably rage quit trying out this build, but I should try it out for science and to break the meta from time to time.
SRM2 are pinpoint enough on their own, instead of artemis, why not take UAC10s (which are also 'almost pinpoint' due to the low delay between the double pellet?). Cooldown synergy is nice but not the end of the world (you can make UAC10 also sync with double tapping)
I've tried with UAC10, but the main issue is the longer cooldown (2.5s + "duration", the latter is almost negligeable, despite actually requires to maintain a slightly longer face time). Also, the other issue is the lack of alpha strike on this build: with the given mobility, torso yaw and hitboxes is not an excellent brawler, so it's somewhat easy to die due to stronger brawlers... The loadout idea per se is not REALLY bad (not even close to be meta, but it's a "fun" spammer), but a better and faster mech is required to actually make it shine.
