I went ahead and ordered the tsu9600 and the rfx9600. Since I got the rfx9600, what exactly would be needed to control RadioRa dimmers? Sorry for all the questions, I'm new to this. If I have it right, I need the following:

Lutron RA-RS232 RadioRA Serial Interface
2 dimmer switches (one for overhead can lights, and one for sconces)

I'm not sure what wattage dimmers to get, (theres 6 can lights, 60watts each, and the switch is in a 3 gang box and the sconce switch is by itself with 5 lights, 60 watts each) Would I also be able to control the rope lights under the steps with the same switch for the can lights, or would I have to get a 3rd switch? (the rope light switch is in the same same gang box as the can lights)

Hopefully I don't need the serial interface because it's $450!!