Congratulations on your CP milestone!
I use 100k myself and rent out the rest as I have an non-optimized collection that's a bit old. Keeping my old cards and renting out more than half of them.
But I do dream of both optimization as well as moving up from Gold 3 sometime. I usually end a season on 2700-3000 rating after all.
There is so much to collect in Slinterlands! How's your SPS doing?
Cheers !PIZZA
RE: I Made it to 15K Collection Power, and You Can Too! - Tips for Setting and Achieving Goals