The colour temp will not be a significant issue, Bruce.
However, I think having two strobes of such different powers will be a right PITA most of the time, when it comes to light quality. What do you do it you want the main light coming from the left and you big strobe is on the right. I guess you could turn the camera upside down! Much better to have two strobes of the same power and then turn one of them down to give you a main light and fill.
One of the pool exercises I do on my workshops is to get people to experiment with the different strobe powers needed to shoot a vertical CFWA shot. People generally find that they need a three stop difference between the upper and lower strobes to get pleasing even illumination. This is a 6-click difference on an Inon! And that is before we start messing around with directional light.
Anyway, back on topic. I would not worry about it. But you could always add a Lee 444 filter to the DS51, which would match them pretty closely.
Alex