Go for it! If you're not happy with the sound, looks, or whatever, by all means change it to your personal preference. I just got my 90th, and I've already ordered a guard from Jeannies. That stainless guard sounds cool too, I'm interested in as where to get one. As far as sound, the 90th does have a different, warmer tone than my 7VWH. Aka: Alder vs. Basswood, which is very cool.
The Breed's sound pretty good for a variety of stuff. A lot of folks here prefer the PAF's Les Paul like tone. Tone Zone's are pretty well rounded, and would make a nice transition.