Hi everyone!

I’ve been here before, but then our trip got put on hold. We are now figuring it all out again and I’d love some opinions about if it’s worth opening another card for some more points.
P1:
02/19 – Barclay Arrival +
05/21 – Chase Sapphire Preferred
I also have a Chase Freedom but it’s been 6 years. I don’t remember the exact open date anymore.
P2:
07/21 – Chase Sapphire Preferred
He also has a Discover it card, but it’s be 6-7 years as well.
Monthly spend: $2500-2700. We don’t have a FF miles program or a hotel rewards program. We’ve only done cashback cards in the past.
Our current goal is to get as much off of a big family Disney trip in November 2022 with myself, my husband, our three young kids, my sister and my parents. The total cost of the room & tickets right now is around $12k – which I know we will not get ALL paid for by points. We just want to take as much off the top as possible. My sister also opened a CSP with my referral code and will use the points toward the trip, but I don’t think she is interested in doing anymore past this. We haven’t combined my husband’s CSR and mine yet, but I’ve heard that’s a possibility to make things easier for redeeming down the road. We also have not figured out what cards we want to use as our “main cards” once we are done collecting the points that we can, so if you have an opinion about that, I'd love to hear it. I'll honestly probably close some of the extra cards after we pay for the trip (but we will keep our 6-7 year old cards open).
edited to add - we do not own a business. That's probably helpful information, too! So I can't do the business cards.