WP is a superb set for play where you won't be expecting to min/max. This is a very friendly "set and forget" set, which is forgiving for beginner to upper intermediate, due to the layered mitigation.
I've build many WP toons and love them, but when the difficult ramps it will tend to fall off; what causes this is the layered mitigation with too heavy a reliance on regeneration. Because WP doesn't have very high defense or resist, it will tend to take much more damage. Normally, this is ok, but due to how RttC works, it doesn't completely translate to sturdy at the extremes. As one encounters debuffage in the end game, especially -regen, WP will begin to falter. Once defense drops, damage will become quite extreme. Further, if you're hit with -regen, life gets very uncomfortable.
So, recognizing that WP is great, plays easy and is very forgiving, will yield a fun experience. Don't expect it to do what it can't; Pushing into territory an invuln or stone would faceroll will cause some sad days.