Never too many amps! I'd love to hear those Kenwoods. I've heard and read good things about them. 
The Kenwoods, are so good, I find it hard to replace them. Especially the MKII.
Here are the quite impressive specs from thevintageknob.org
http://www.thevintageknob.org/kenwood-L-07M.htmlPower : 1x 150W (20Hz...20Khz, 8 Ohm, 0,008% THD) 0,007%THD
Continuous power : 1x 150W (8Ohm, 1Khz)
Dynamic power : 1x 200W (4Ohm, 1Khz)
1x 300W (4Ohm, 1Khz) 1x 250W
THD : 0.008% (rated power, 8 Ohms, 20Hz...20 kHz) 0,007%THD
0.008% (15W, 8 Ohms, 20Hz...20 kHz)
0.002% (rated power, 8 Ohm, 1 kHz) 0,007%THD
0.003% (15W, 8 Ohm, 1 kHz)
0.003% (rated power, 4 Ohm, 1 kHz)
0.003% (20W, 4 Ohm, 1 kHz)
IMD : 0.002% (rated power, 8 Ohm)
0.002% (15W, 8 Ohm)
0.003% (rated power, 4 Ohm)
0.003% (20 watts, 4 Ohm)
Rise time : ? 0,55µs (-1V > +1V)
? 0,55µs (-20V > +20V)
? 0,55µs (-40V > +40V)
Slew rate : ? ±170V / µs
Frequency Response : DC...200Khz (+0 / -0,5dB) DC...600Khz (+0 / -3dB)
DC...150Khz (+0 / -1,5dB)
Signal to Noise Ratio : 120dB (IHF-A)
Damping Factor : 100 (8 Ohm) 120 (8 Ohm, DC...20Khz)