orCeriatone Marshall 36 watt EF86 head. 36 watts, switchable to 18 watts. Ef86 channel inspired from a vox/matchless preamp. Classic Marshal tone with el84's so it breaks up at a more reasonable volume.
Ceriatone JTM-45 Head. A bit more headroom with kt-66's. Early AC/DC tones.
An Avatar Vintage 4x12" cab to save a bit more cash ($500) with a Black Pearl Head or something a higher range?