Accept that you won't be able to save cards for the Combo or ramp early and focus on keeping the board clear (especially against pirate warrior)
I know the season is coming to a close and this will be stuck in wild format. I just wanted to share my final rendition. I was able to comfortably hit rank 5 in this the last few seasons.
You really should try to avoid playing Barnes on curve. However, if you have an innervate and you haven’t drawn: Aviana, Gadgetzan Auctioneer, Emperor Thaurissan, Malygos or Bloodmage Thalnos then you can have some interesting plays. This does possibly telegraph your deck (since Jade is the assumption) if they see a card like Kun the Forgotten King or Malygos.