Was there all of april last year. Saw 2 good swells that month. first one was 8 - 10 foot ( hawaiian ) and the second was 12 to 15 foot. The later was towards the end of the month. so you should score.
Sunset was working even at 4 - 5 foot most days but there was only 2 - 4 waves in a set and the sets were around 5 mins apart. In saying that though these were the days ( weekdays ) that only had 6 - 10 guys out, with a mellow vibe in the line up.
You will get waves along the pipe stretch for sure. Even at 3 foot it still packs a bigger punch than a 3 foot beachy on the Sunny Coast.