G'day,
My name is Mat from Sydney! First things first, I think as a long-term play, you should move away from Weebly right now. It's free for a reason: it's extremely limited. If & when your online store gets big, Weebly just isn't going to cut it, especially if you want all of these awesome features. I've been building websites for the best part of 10 years & I'm confident that I can build an awesome website for your sleepwear business.
Straight up, I think we should move the platform over to WordPress. Using WordPress it allows you to manage & edit pretty much everything. You'll be able to edit content, update products, change prices, basically everything all from the powerful backend admin panel. Out of all of the websites on the internet that have content management systems, 51% use WordPress & they use it because of its versatility.
If my bid is chosen, I'll build you an awesome WordPress website with all of the features you've requested. Users will be able to sign up & create accounts. They'll be able to add products to a wishlist within their account, you can give certain accounts store credits, coupons etc.
I'll also integrate the pop-up for when a user visits the site. We can set this so that it can be every 2nd time they visit, for it to pop-up if they're about to close the website & more. Also the website will be responsive on mobiles, tablets etc.
I do have a word limit here so I have to stop but let's get chatting! I can get started right away!
Mat