Or go with something simple like an Omega single driver speaker + small SET amp. Omegas are more satisfying an experience vs most multi-way speakers under $5kish, depending on listening habits and preferences of course. They aren't great for blasting Led Zeppelin or playing large symphony pieces, but they are amazing with some kinds of music.
Led Zeppelin is actually quite a good fit for small fullrange drivers and OB systems, provided you stay within their midrange power limits. None of the studio albums have any significant bass. They all roll off below 80 Hz. "Celebration Day" is the only one that gives the bass drivers a workout.