Touché. Assuming I make it to my next recurrent sim session, I'll give it a shot (is there a way to silence the CRC in the sim?).
We did 250 to the marker with some regularity in the RJ. The most I've done in the 320 was 250 to 10nm, with a pretty good headwind, if I remember. We got the flaps to full at 1020 ft, and were stable at 550ft. If I'm doing that on the line, I'd prefer trying it a few times in the sim first.