You have some great goals for your Splinterlands progress! Having the common rebellion summoners at level six is a smart plan, as they can be very useful in battle. And completing your Chaos Legion deck will give you a nice set of cards to work with.
I noticed you are no longer on the zealy marketing campaign. You no longer solve quests. I'm encouraging you to rejoin the campaign, there are lots and lots to learn with great rewards.
It's promises to be exciting.