Since you're asking about a Citi AA card, I'll point you back to a post from our benevolent dictator with an analysis of all the AA offers out there:
https://www.disboards.com/threads/i...-addl-details.3729982/page-1199#post-60584596
Would you like to use the points to stay at Disney or Universal? Or do you prefer off-site locations? As alluded to in SouthFayetteFan's post, the AA miles can be used for Disney hotel (for now at least) as well as flights so they're more versatile than they appear at first. Chase UR points can be used for Universal hotels and tickets through their travel portal, which can get you a better value points redemption if you have one of their premium cards. They both can be used for offsite as well but more mathing gets into play there
It looks like you are 3/24 with one falling off in Oct so it's a pretty good position. Despite their rudeness at removing Disney as a redemption option, Chase UR points are still a favorite and recommended if you're under their 5/24 rule. But it looks like you have some runway so you could still do a AA card and jump into UR too. Are you familiar with Plastiq? For a fee it'll let you pay bills that normally don't accept a CC with a CC so that can be helpful with your mortgage question. Mastercards allow you to pay mortgages through them so that's also a point in the AA card's favor. Sometimes you could trick Plastiq into paying a mortgage with a Visa, and at one point Mr Cooper was working for a few folks here, but it's been a while and I don't personally use it so I don't recall if they caught onto that one.
Don't know how long you've been following along, but we have some additional information posted out on our private Reddit group regarding using the Plastiq service and how to use AA miles for Disney hotels (among many other topics). If you're interested PM
@SouthFayetteFan ,
@Albort , or
@Lain for an invite to the group. There's a wealth of information stored there.
You mentioned that you're carrying a balance on one card so I'd be remiss if I don't mention that you should be careful when taking on MSR's to earn points that you pay off the balance each month in full to avoid the interest. It's easy to fall into the spend trap where you either spend money you don't need to or spend it too quickly and not be able to pay in full, just to meet the requirements. It seems like what you have there had a plan so it's not too concerning, but something to keep in mind when starting out in this game. Otherwise you'll just be giving back in interest what you gained in points - And you know the pirate's creed... take what you can,
give nothing back!