Having been juggling for many years, I might have some unsolicited advice. Feel free to tell me to shut up or to ignore me
Take care with weighted juggling balls, they are awesome for conditioning and I highly recommend it as a form of conditioning, but no more than half an hour a day as RSI with weighted balls is a real concern. You may already know that, but I feel obligated to say something. Also, I find doing regular balls after the weighted ones to be great for coordination. For me, I feel like tired muscles learn better.
I am currently working on juggling clubs. I can do it fairly consistently and so now I am trying to master crossing my hands every few throws. It keeps me humble to try something I can't do, but I also remember a year ago when I was trying to get back into club juggling and had a hard time stringing 5 throws together.
Best of luck and I can't wait to hear about your juggling successes!