re: Question for you guys that jump on these Credit Card Promotions

"This" being manufacturing spend?

The answer is "it depends"

Amex does financial reviews so if you have an income along with an SO that could theoretically support that level of spending then you are fine from what I can tell.

They really are looking for people making 40k a year with 200k in spending or purchases that don't match previous activity. I started slow and spread the spend across my cards and my SO's.

Hope that was your question.

ETA: I also have legitimate expenses that I'm covering as well such as rent and student loans. Since I could afford these straight up, my level of spend doesn't alert them as being a risk of default. They are more worried about holding the bag, not too much about what you are doing, but that is still there as well.