WPW and PVC's

I was diagnosed with WPW when I was 22 years old. I have been taking Propanol, 20mg once a day at 6 PM, no problems. Recently, I came down with a flu, I think (headache, neckache, tired, no congestion. At the same time I noticed 1 to 2 hours after I took my Propanol, my heart started to skip. Blood test came out OK, Echo, OK, Holter showed Ventricular Eptopics, Single and Trigeminy.
Cardiologist says nothing to worry about but sent me to an Electrophysiologist. He wants to do an EP study and possible RF ablation to get rid of the WPW, but suspects problem is on left side. PVC's are much less since the flu went away but still there. I notice almost no PVC's when at work or while exercising.
Question - Could the Flu (Virus) have caused the PVC's?
Question -  Could they go away?
Question - Any chance the WPW extra pathway can cause PVC's
Question - Why do they get worst a few hours after I take my medicine.
Question - I also notice I wake up almost every night, sometimes feeling the skipping, why?
Question - If I get the RF Ablation and get off the Propanol, could WPW and PVC's go away?
Question - What is the risk of poking a hole from the right Atria to left Atria to ablate a problem on the left side?