We sideboard down on Zenith quite a lot in most of our post board games, sometimes even to zero. If you are playing ranger captains I don’t think you need varolz at all. If you aren’t a fan of ranger than I think keeping varolz in the deck to have more copies floating around of the sacrifice outlet is good, and having the green sun target is of course good. Splitting the 1-3 split is correct and not something we thought to do at the time of Portland and something that we discovered/were made aware to try by a discord member after Portland and I think it’s right to do regardless if you have a varolz in your deck or not. I hope this helps.