I'm planning to build a 5E3 tweed deluxe combo and I'm going to use a variable voltage regulator from Hall Amplification to be able to turn down the power and get good tube overdrive at low volume. You can check it out here
http://www.hallamplification.com/main.html?src=%2F#2,2 The international shipping is fixed at $13 for up to 4 boards, so if anyone else wants one, drop me a pm and I'll place an order for more than one.