I think there are some good suggestions, but I just want to echo that you'll probably have to squint a bit to get what you want in a 3.5 to 4e character conversion. The system was never meant to port characters over directly from previous editions, and while the number of options has increased significantly (I remember PCs trying to convert "Barbarian" and "Bard" classes when only the PHB1 was available!), the rigid structure of 4e that most classes are based on makes converting multiclass characters difficult.

I second Tegu8788's advice; the first step (even beyond what classes you pick) you should take is to figure out "what does my character want to do" (i.e. the role or roles; Defender, Striker, Leader, Controller). From there, a lot of details can fall into place.