I am using Windows 7, but I'm not using the specific applications that you are, so I'm not sure if my comments will be much help at all (but I'm not going to let that stop me). I'm using Bluesoleil with the mobilphone.net plugin inside of RR with the elite skin and that seems to work quite well so far. I'm also using Microsoft Streets & Trips 2010 instead of iGuidance, but I haven't really noticed any problems with the screen sizing with it (I'm looking to replace that, however, since it's not geared at all to a touch screen).
The only thing I would say that's been weird so far is that I installed a CAN232 adapter that I feel certain is hooked up correctly to my CAN-BUS network, but I can't get any output from the CAN-BUS at all (although I can get the version # echoed back from the CAN232). I have a CANUSB adapter on order that I'm hoping will resolve that for me, however.