I bought a Peavey TNT 130 when I was 19 and sold it when I was 33.
It was LOUD, and so heavy I couldn't lift it by the handle alone. I had the grab the handle, tilt the amp onto my thigh then lift it in a bear hug. It sounded OK, but the weight was prohibitive. 35-40kg (77-88lbs)
If the TNT 100 has a "15 Black Widow, I'd expect the weight to be similar. Not sure about its ability to keep up with a full rock band though.
If you're young and strong, or not going to be moving it much, give it a whirl. If you're not as strong as you once were, there are better, less heavy, more powerful options out there.