I would also suggest S3 over Springvale (you should instead save all EHTs for this).
As you are vc2p and already have Reuben, I would weigh up whether Bertila will help your roster and possibly wait until then - up to you.
If you pull now in December, then I’d wait until after the pulls to decide on Reuben.
If you pull in January, I would probably ascend Reuben now.
If your decision wasn’t already difficult enough, the League of Villains will be released at some time in 2021 and that would be worth a 10x pull if you’ve saved up enough by then.
PS: Looks like you’re working on it, but I would max all those Joon costumes for the 5% mana bonus!