I'm personally a fan of strobes. You can take them anywhere you want and set up a studio anywhere you want. With constant lighting you're stuck somewhere near a socket. I'd also argue that you don't really need a modeling light, you learn to see how it's going to hit the subject. Head over to
Strobist and read the Lighting 101. This guys uses only strobes for all his work and does some seriously amazing stuff that you're not able to do with continuous lighting.
You don't need a lightmeter. There is plenty of information on the internet on how to figure it out without one, and you don't need long to learn how to do it by feel and experience.
About the lights, two is generally enough but three is a lot nicer. The light that you might possibly be 'missing' is you only have two is the one on the other side of the camera. A standard lighting setup in a studio is often composed of a lamp at 45 degrees to the left, one above and behind the camera and the last one lighting up the background. However, if you feel that you're lacking light on the other side and you only have two strobes, you can still put up a reflector on the other side.
Also, keep in mind that you don't really need lightstands as such if you are firing a strobe bare. They don't weigh much so you can clamp them pretty much anywhere. There's more information about that also on Strobist, as linked above. That you can't do with continuous light.
Most people start with umbrellas, they're generally easier to use and more versatile. This especially applies if you get an umbrella with a cover that you can take off to change it from shoot-through to a reflector umbrella.
Otherwise, your setup looks good. It might be easier to have two identical strobes if you want to figure out the ratios between them easier, but having two different ones is fine also.
Hope I helped.
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