It is very important to pitch at around 64-68F and allow the beer to naturally warm up as it is fermenting. The lower pitching temperature will ensure that there will be minimal fusel alcohol formation, but the yeast will still create a good ester and phenol profile. Let the beer warm up naturally to around 75F, this will allow the yeast to finish dry, which is important with all Belgian beers.
To tell you the truth, if I was brewing this beer I wouldn't use CaraPils. You don't want too many dextrins, chances are the LME will provide enough body without the assistance of a specialty grain like CaraPils. As for the PM, aim for a low mash temperature, somewhere around 147F-150F, this will make the wort attenuatable.
Remember, start cool and allow it to naturally ramp up so that the beer can finish really dry, you're looking at a target attenuation of around 80%.