I'm familiar with the PAR charts, but I'm not sure how different the light output is between 2x36 watt PC bulbs and 2x65 watt PC bulbs..
never mind, went digging through the 7th page and Hoppy said "all PC bulbs give the same PAR at a given distance from the bulb." I guess the wattage doesn't really matter!
Looks like I'll go with the 130W PC and only use one of the bulbs/possibly raise the fixture.
Now, if only my aqua soil would get here..