Works better that it seems. You will spend most of your them LRMing while closing in, taking shots with your AC10 whenever you can, MLas only when you have a sure hit, and usually by then that would rip off a part or two. Not too fast, but enough to move around with the slowboat of this chassis, and plenty of ammo to work with. If you like you can swap some ammo for some DHS or another MLas. I would leave the hands unequipped and use them as shields though.
I run a very similar build on my Boar's Head and it works great. Bonus for having shield arms on this 'Mech. 5/5. Nice work!