Othar than Hatsu... Maybe 6p to peek at hon itsu/chii toi/chanta?
The points being flat, I would rather just discard Hatsu in tenari-mode to increase the chances of pinfu even by a little. We have just drawn a key tile for that, after all.
Hatsu. One's gone, you have one. Might as well get rid of it. It's early anyways. If you end up drawing another one, whatever. Besides, you'd be on the way for a Pinfu, and possibly Iipeiko.