I understand not wanting to use red as I tried the same thing and just love the look of the blue. However I just could not get to where I needed to be with the blue bulbs.
I would not jump to a 100 watt bulb. I would go to a 60 watt. If you go higher get a dimmer so you can dial it in. Turning down the bulb will also make it last longer.
Have you thought about a che? I have one that has been pumping at full power for over 2.5 years. No light, just all heat. Then you could add a small blue bulb for just effect or maybe even go to LEDs and save power. If you do get one go ahead and get the wire basket style fixture for it. They don't trap the heat and cool the unit like the bowl style. That's what I use and I'm amazed that its still going. I also use lamp stands for all my lights and not having to move them around all the time extends their life as well.