My 17" model is rated at up to 90w. My flat panel is something like 43w. Not as dramatic a difference as you would think but they definitely use a considerable amount more power.
One of the issues with keeping a CRT is if you need to repair it and you're not experienced. The tube can stay charged and that's where you can get shocked from. It has a very high voltage which can be dangerous if not discharged correctly. I've heard of people getting zapped (like a taser or something) but haven't heard of any deaths. I would guess as a rule, working with just one hand in there isn't a bad idea. I would like to possibly look at replacing whatever caps in mine have gone (resulting in the geometry issue I have) but to be honest I'm not experienced enough to do it safely. I think CRT monitor or TV repair people are probably hard to come by now and expensive as a result unless you know someone.
For sure its a dying art. I used to have a TV repair centre with 15 Engineers.
You only really needed to discharge the Tube if you were replacing the LOPTX or regenerating the tube itself.
What sort of geometry issues are you having E/W fault??