I'd definitely get what I love. And although the trevi is a tiny bit on the heavy side I never regret buying it. If NF is more convenient since you have a child and one on the way, I suggest that.
I would get what I need. Since you've got a little one and another bundle on the way, it would be more pratical to get the NF MM and the Speedy. The NF is a work horse and in Damier it just doesn't show alot of ware and tear. The Speedy could be your " dresser " bag. Remember, the Speedy is iconic and you can dress it up or down.
Maybe you could get your high end bag as a gift for being such a good mommy!! I would put in on your hubby's mind!!
Good luck on your trip to the boutique!!!
ITA!!Get the NF and Speedy, use your leftover money for wallet, pochette, etc. I swear I enjoy my small pieces more than my bags!