Length of existing customer Pixel 11 discounts

So I'm in a bit of a pickle. I'm looking to buy the Fold 11 or the Z Fold 8, but I'd really like to finance them with the 0% APR. Unfortunately my credit limit is at $1600 which is just under the MSRP of both phones. I chatted with Fi support and they can rerun my credit at the end of my next billing cycle (I have to pay off my free Pixel Watch 3 I got on promo a couple of years ago before they can rerun credit), which is Sept 3rd, and I'm very confident it'll be for a higher limit.

Right now I'm getting offered $600 off the Fold 11 and $700 off the Z Fold 8. The offers say they end August 26th. I feel like these types of offers are always there because I haven't upgraded my phone in 4 years, but I'm worried that if I wait until the 3rd, the promos will end (and/or the folding phones will go out of stock).

I *could* just pay cash, but after tax it's $1400 and I'm having a hard time pressing that confirm button 🤣 Any insight into Fis typical promo lifecycle or other ideas?

I could get both phones on Amazon with similar discounts and finance for free with my Amazon card, but $350 of it is an Amazon gift card which... ehhh. Not as good as an instant rebate.

Not sure what the best path here is.