First of all, Congrats on giving birth to a baby! One of the beautiful moments to bond with baby and I can understand why you would not have the time to go shopping at Hermes.
Pink GP old stocks may still be there. Frankly, the stocks for Pink GP is highly relative. It depends because most GPs today stocked are in non-pink.
How long have you been waiting for a Kelly? If it has been too long to wait for the Kelly, my suggestion is to get the Pink Garden Party.
Firstly, you're not at a loss. You adore the color, shape and size. Even if the Kelly is not offered to you at the moment or may take time for you to save some money, you still have the GP to enjoy.
No point in getting items that you may not like and getting them for the sake of hoping to be offered a Kelly. Such logic may still be relevant with Hermes and it's understandable from their business/sales point of view. However, not everyone has a big budget and we have to live within our means.
Husband may not like it. What's more important is if you like it. I know how partners can influence our decisions heavily. There are times we have to listen ourselves, close our ears and ask them to keep quiet.
Another option is, how about asking husband to shop for a Kelly for you? Who knows a male charm might work on SAs.