Heck yeah, congrats!
I think @BrutalBodyShots is the resident expert on the $5k-at-a-time approach with Amex, so maybe that poster can answer your question.
Grats on the CLI and you have a great CL on the card
I've had it since 2013 and have only been going 5k at a time since it was 25k. It's been 6 months so I figured why not and went from 45k to 50k!
Anyone know what the limit is? Should I have asked for more?
From my experience, asking for more than $5k would have resulted in you still only getting a max of $5k anyway, so I don't believe you left anything on the table. I followed the $5k/6mo approach for years from $30k up to $59,900. When at $55,000 I was only able to obtain $59,900 when I tried for $60k.
It's been almost a year since I asked for a CLI since hitting what I believed to be a ceiling at $59,900. I just put in a request and rather than get an immediate response it said I'd receive one in a few days or something. I'd imagine that's a hard "no" which is fine since I go months without even using the card.
Congrats on the amazing CLI!