Although u r right..dont under estimate the power of polished shoes!!
One interviewer leant over to take a look at my shoes. Its the small details that are often over looked.
Wouldnt bother with a high fashion suit, just simple and smart..dark colurs usually.
If like me you get sweaty palms when nervous, use one of those quick wet wipes before to freshen them up so your handshake dont feel all clammy!