Hi! To answer your questions, yes, you could purchase one and connect it to your network, but it will not just work with your current lights and shades out of the box. You would need to reprogram it using the Radio Ra2 software. You can either take the free online training course and gain access that yourself, or you could higher a local Lutron dealer to do it for you.
To find a dealer, put your zip code in on this page
https://lutron.com/wheretobuy
For the training follow the instructions here
https://files.lutron.com/PSPPlanner/...ll%20Sheet.pdf