(cross posted)

Don't do CapOne becuase 1 application you will end up with 3 hard pulls (1 each on each credit bureau). At end you gain 75K points but is down $1200 opportunity benefits (each pull is worth $600). Cap 1 should always be your last resort.

You could do Barclays and get 70K AA miles (TransUnion pull) and do Chase Ink 90K (likely Equifax but might be Experian) and Amex Gold (Experian) 90K points

3 pulls and you get way more than Capital One's 75K points.

Your spending will be kind of high but that should not be a big deal.