Definitely tooo hot. I ran 4x LPLas in one of my Awesomes with some more Heatsinks. Forget it. The Purpose of such a craziness is the high Alphastrikepower, but due to extreme Ghostheat it doesnt work, forcing you to switch to Chainfire. I suggest you to use a Mix of LPLas and LLas for different Weapongroups/Ranges:
This is what I run, which is very similar to the above, but dropped two SSRM2s and a smaller engine for better heat management. Both arms can be used to absorb damage as they only contain heatsinks. I'll take some screen shots later, but it is really fun to play and is excellent at slicing off components. Edit: XL Version. I wouldn't use this personally, do not like XL in assault brawllers.
Maybe with the increased energy range and decreased laser duration, (along with LPL nerfs to other platforms) this will be a rising choice for boating LPLs? Not sure if you should run XL on this mech, but could always do standard with slightly fewer heat sinks too.