My partner and I live on opposite sides of the city and it often takes a couple of days for both of us to get a complete set of images. For example, the wedding we just shot had over 20 gbs of RAW images and I brought all the cards home, loaded them on my computer, then I will get the cards to him in the next couple of days for him to load onto his computer. Then of course we each do our own edits and we combine them at some point. As you can see, this is not very efficient at all. I use Mac and he uses Windows, shouldn't be an issue, but wanted to be thorough for my questions later..
Ideally I would like to bring the images back to my house, load them onto a storage device that we can both access remotely and edit/save images directly from that device without having to download them, then later upload the edits.
Obviously...my question is, what's the best way to accomplish this. I have a WD MyCloud drive now, but it is not very user friendly and is very slow. I am looking at Synology and wondered if anyone has experience with that system and could comment.
I imagine we would each have a sign-on to access the images, and would be able to work directly off of that device and save the edited images on the same device. That way when the other person goes in to do some editing, we can see what has already been done.
Thank you in advance for your input!

