with max armor, and a cooling efficiency of 68% this mech can come in hit turn around and come in again, indefinitely if needed as the heat will be dissipated by the time you make your second pass.
OMG, I though I was demanding about heat efficiency but you really beat me soundly! Do you really need that sky high heat efficiency? Because you're kind of slow - I'd understand if you packed heavy weaponry, but... Here's what I suggest: remove one DHS, upgrade the armor and mount a glorious XL300.
You should do this build on the crappy type K. You have no need for the CT launchers anyways, at least you can make use of the extra module slots.
I go with what i have to work with, I already had the XL engine, and the F varient, so I work with what I got. When I get the cash I will put in the XL 300
You won't waste your money buying the XL300. It's a very versatile engine, I found myself using it on all type of mechs (jenners of course, but also dragons, catapults, victors, YLW, cicadas, etc).
Rated 3/5 stars because, while this build is a decent build, it belongs better on the JR7-K I know you said you are working with what you have but you are ignoring 2 of your basic design hardpoints by only using 4 energy weapons instead of 6. As was mentioned if you only plan on using 4 then take the K and enjoy the benifit of an extra module slot. Since you don't mount ECM or BAP you don't have to worry about ignoring the JR7-K Missile Hardpoint.