Sorry to be "that guy", but I've a question about the likelihood of a shutdown.

Two Ch@se Biz cards for a legit business:

CI Plus 7.5k CL: 2.5k (VGC @ Staples) & 5k non-bonus ($2k in straight GC and $500 on Amazon cards)
CI Preferred 40k CL: 15k in ads x3 & 25k non-bonus

My worry is hitting the credit line or going over, and thus I'm cycling. Also, I'm killing the 3x ad spend (which is legitimate), but am afraid this will get my account looked at due to its high proportion of spend, and thus lead to scrutiny.

The amounts are small, compared to what I see around here, so please don't laugh

If you made it this far, I have one more ask. Assuming I ramp slowly, how high could I get without worrying too much? Don't worry, I won't hold you to it when I get shut down!