I've owned three Super 17 amps and one Custom 33. In fact, his Super 17 Express came about because I asked him to build me a blue S17 without reverb or trem with a black faceplate and cream barrel knobs. He had to get the faceplate custom made but gladly did and built me a beautiful amp which he christened the "Super Seventeen Express." I loved that amp.Goodsell Super 17.
Classic Vox design. Tone richer than a boutique milkshake.
The best amp tremolo on the market (IMHO)
And Richard can probably make a combo for you at around 29 pounds.
Might need to stretch the budget a bit, but it is worth it by a mile.
Mesa ROV25 combo - 41 pounds.I'm thinking you can't easily get a combo amp in the twin el84 variety that will weigh less than 45 lbs. My suggestion is to get a smallish head and a 1x12 cab. For example, try finding a used AC15 Heritage head.