Dont forget that an OOA pre-preg has much less pressure acting on it when the resin begins to flow. The lower temperature gives it more time to flow and speeding up the cure cycle when the resin needs to flow the most may lead to pinholes as the resin has too little time to do its thing.. I do an overnight cure usually from about 6pm through to 10am the following day and get flawless parts. I dont need to speed up the cure as it works out prefectly for me and the heater is quite efficient at the lower temperatures once you get to 85 degrees+ the heater is almost running constantly in my oven which uses a 3kw fan heater and is large enough to do full motorcycle body kits with ease..