I am a newbie also. I have no formal experience at all and we have done Pumphouse to Radium 4 times in last 2 weeks. nothing to really worry about. There are a couple of tight spots. I think one is called Thread the needle, has large rock right in center of river. I have taken both lines, right and left. Right is getting shallow, but left is very tight. I took right line Wednesday and just pull the oars in and play bumper cars. It is very short chute. Other than that just know to transfer your weight in the boat to the high side, the side that gets stuck on the rock, and you'll be fine.
That being said I am assuming you can swim good and are not afraid of the water. If you can't swim or are afraid than be very cautious.
When are you going out? I was thinking of going out tomorrow if it looks like weather isn't going to be to bad. NOAA says 20 % chance of showers after PM and only light winds. It takes about 3 hrs at most to make it to Radium. Wind has been bad lately, but not the end of the world. Sunday and Wednesday were fine.