The stock headlights are in the 55 to 65 watt range. I wouldn't go higher than 75 or so under any circumstances.
I think the 9145 is the stock foglight bulb, but I don't remember. I refitted mine (when I had a valance, lol) with 9005's. I don't remember the wattage, but I think 9005's are 55 watt. The foglamp system can handle them fine.