As far as I know, once you earn points they will count towards the Ace even if you transfer them to another account (that is more like spending them).
Becoming an Ace is really easy once you keep your subscription for 6 months or so and keep reviewing your samples. I would recommend tweaking your profile settings to make it more skincare than makeup. I have completely different profiles in my two accounts, one gets makeup the other gets skincare. You can try a similar thing.
Having an Ace account helps most of the time (early PYS, faster replies to CS emails, higher discounts), so it's good to have one Ace account.
You can unsub/resub once you see good promo codes and/or refer yourself when opening a new account to raise your points balance faster.
Hope these help.
Happy belated Thanksgiving, too =)