I also like the Jeff Korneff amps. You might consider Jack Elliano's Ultrapath preamp too. That is getting a bit of attention lately.
For the speakers, the DIY route is very popular with the triode/horn crowd. For real front-loaded horns, try the Oris 150, kit or built. It uses a powered subwoofer under 150Hz, but can use low power SET above 150Hz. If you like a back-loaded horn, then the Hedlund Horns are a nice project, or you can get them already built by Hornet Audio. Not real cheap, but nice. Another nice back horn is the Lammhorn 1.8(not a kit). For the cheapest, but still very good sounding single driver Voigt Pipe setup, try the Cain and Cain Abby's or even making your own with Lowther or Fostex drivers. Easy woodworking, no crossover to build, and very nice sound when done right. You might be able to keep the whole package of source, preamp, amp, and speakers and cables under $5k, if you are a good shopper and do some DIY. And this would yield very excellent sound too.
For the speakers, the DIY route is very popular with the triode/horn crowd. For real front-loaded horns, try the Oris 150, kit or built. It uses a powered subwoofer under 150Hz, but can use low power SET above 150Hz. If you like a back-loaded horn, then the Hedlund Horns are a nice project, or you can get them already built by Hornet Audio. Not real cheap, but nice. Another nice back horn is the Lammhorn 1.8(not a kit). For the cheapest, but still very good sounding single driver Voigt Pipe setup, try the Cain and Cain Abby's or even making your own with Lowther or Fostex drivers. Easy woodworking, no crossover to build, and very nice sound when done right. You might be able to keep the whole package of source, preamp, amp, and speakers and cables under $5k, if you are a good shopper and do some DIY. And this would yield very excellent sound too.