I'm afraid I have bad news for you, RussianSpy. According to Dr Daphne Fautin (anemone expert and author), the Pink Skunk Clownfish's host anemone species are: Heteractis crispa; usually H. magnifica; Macrodactyla doreensis; Stichodactyla gigantea. The (R)BTA aka. Entacmaea quadricolor won't work (at least not in the wild). Most of the charts that list the BTA as a host for this species are sites that sell fish and therefore may be a little liberal in their charts as their focus is in selling fish, not research.
Fish don't read books, so there is a chance your pink clown may decide to buck the trend, but don't be too disappointed if it doesn't work.
As for growth, I purchased mine 3 months ago when it's disk fully inflated measured approx 3 inches across. It has trippled in volume in the last 3 months and the disk is now approx 6 inches across. I feed once to twice a week a variety of meaty food including tuna, salmon, shrimp, scallop, plus it snacks daily on the plankton I feed my fish.
Good luck with your anemone and I hope your clown is illiterate
.