Hey RGerry, the ADA amps a very good albeit getting a little older. My favourite is the B200s, SS 124w a side into 4 ohms 2 RU and not super heavey. I still have one but I need to fix one channel. In the meantime I need a power amp so I bought a Carvin TS100, I love it, it's a really good amp with MP1/2 (I'm using MP2) and the 50w a side is plently loud, I haven't run it past 3 o'clock. With MP1 and your style you'd probably like the presence knob (6khz boost), I don't use it though. So highly recommend either of those options, the TS100 is heavy as is all tube, ADA made all tube amp awell, nice amp, MJMP and Dante have them but they are almost twice the weight of the Carvin (which you can buy new). ADA also did a couple of hybrid amps, tubes controlling the output transistors, there's a MT100 and MT200. Others can comment on them, I had a US MT100 for a bit running off a step down transformer (240v 50hz here in Australia), it had a hum and didn't blow me away (Dante has it now, doesn't hum in the US (as far as I know) swapped him for his old B200s which has a 240 transformer now and going strong (mate of mine has it)). Sorry I digress.
Main consideration: clean and transparent best for MP1/2 let the preamp make the tone and just boost it.
Weight: you want to fly with it, light is better, then switching power supply SS amps are the go (e.g. Carvin DCM 200L (http://www.carvinguitars.com/manuals/DCM200L.pdf) and only 1 RU, but there are others)
Good tube poweramp: Tube = a little bit more warmth (is nice) but quite a bit more weight. The ADA MT100/200 are 1 RU (and hybrid), most others are at least 2 RU and some 3 or 4 RU, but quite a few out there (Peavey, Boogie, Marshall, ENGL, Mosvalve etc)
But seems to me like your power blocks will work fine, just bypass the preamp section and run it in stereo.