The Tl;dr answer is you will have to cancel CSP and Freedom for both of you ASAP. Having active accounts will prevent you from receiving another opening bonuses again.
The UA 50K+5K will work for you.
Originally Posted by
blueflower22
How does this [pay 10% of adult fare]work with points?
It is based on a full fare ticket.
For example, currently a UA SFO-LHR economy ticket (Full Fare Y Class) is sold for $5023.26 ($4,794.00+$229.26 tax and fees).
The cost for the infant will be about $479.40+$229.26 (the tax for infant should be lower than adult)=$708.66.
Originally Posted by
blueflower22
Are there any other non chase hotel CC that have good coverage in Spain?
SPG is partnered with AMEX, not Chase.
What you should do is to have a rough plan about Spain so you will know what to get.
Originally Posted by
blueflower22
Is it a good idea to close first and then apply for new cards?
No difference anyway.