I had voice training for years and took part in two college operas. Another light baritone, how unusual.
Indeed, I didn't realize you were in the baritone range. I am actually what's classified as a bass-baritone. My absolute vocal range is from B1 (B below the bass cleff) to F#4 (F# above the bass cleff), with my usable range at C#2 to E4. This puts me pretty squarely in the bass range, but at the high end I get more of the rich baritone tessitura or 'sound', while at the low end I get that deep resonance normally associated with the bass.
Have you checked out Class 4 amplifiers for bass guitar? They are tiny and extremely light and pack a lot of power into an amp the size of a carton of cigarettes. I found them to have too clean a sound for my taste, it's possible that they've improved over the years since I tried a couple of them out. All tube amps are too freakin' heavy at about 96 pounds and up, but they sound the best. I settled on an Ampeg SVT-3 Pro head, which is a hybrid amp with a solid state power amp and tube pre-amp. It sounds great and only weighs 22 pounds.
Early class 4 (or class D) amps tended to have a problem with producing good highs. While they were definitely very efficient, I found that the filtering that was necessary to remove the switching harmonics also tended to remove too much of the high-frequency audio component, making them sound a little 'muddy' to my ear. With modern amps, those issues have been pretty well addressed by modifications to the input stage, I think.
I started out with an Ampeg BA-110, which is a little 40W job that weighs something like 30 pounds. I'm currently using a Fender Rumble 350, which is 350W, with dual 10" plus a horn. It's just about right for the playing that I'm doing, being sufficient to fill the room and mix well with the drums, without me having to dial it back to ridiculous levels. That plus the EQ options as well as the Overdrive and Scoop give me the ability to tailor the sound depending on what I'm trying to achieve. The horn lets the slap-bass come through nicely, as well.
I don't know how far you want to go in bass. I wanted the moon but settled for far less. I haven't picked up a bass in three years. Somehow the oomph took a vacation. Having fun with it is the most important thing. By far.
I want to be the next Vic Wooten, of course! LOL
Having said that, I know that I have neither the time, nor at my current age likely even the coordination to ever achieve that level of skill. But I'm having fun and learning new stuff, so what the heck.
P.S. - Tell Less Claypool that sound effects for bass are useless
I thought Less got his effects through the WAY he played more than by using pedals?