Is this your first carry gun? If so, do you know how you plan to carry?
In my experience, IWB on side, barrel length makes little difference to me in carry situations that are not my pocket, but grip length and bulkiness can cause a weird bump on my side. I ended up going through several single stack 9s, to include a G43, and finally switched to the 365XL, and then shortly after got a second one and a 365 grip module so I have the longer grip and the shorter grip. The shorter grip has become my preferred choice, just for the fit under a shirt, for me - though both get regular use and practically I barely notice a difference.
Skip the Sig optic (available with and without), and buy the barrel length or config you want (if its an SAS), and know you can swap grip modules for about $30-40, so its a non-factor if you decide you want the shorter/longer grip, more rounds, etc.. And I am purposely ignoring mag cost, because no one sticks to only the 2 factory mags on a carry gun, right? You were already planning on at least 2-3 more, right?