So you are 4/24 but you've gotten 3 Chase cards this year, and a personal AMEX card.
Your wife is 4/24 and has gotten 2 Chase cards a month ago (and 3 Chase cards in the past 5 months).
You're not pushing the limit yet, but you want to be cautious. I would next consider either:
1) An AMEX biz card for wife
2) A Chase Ink Cash for you
If you did the Biz card for your wife, let that kill a couple of months, then do a CIC for you in Oct/Nov, then your wife could do a double dip at 4/24 for 2 more cards you really want. You could consider referring her to CF and CFU which ends up being a decent amount of points. You have a lot of options...I'd try to spread out the apps a bit though so you don't get caught going too fast. IF you haven't maxed out the CF category yet, you could also kill some time by buying MCGCs or VGCs at Walgreens and use that for some of your spend.