Do you have a 4K HDR TV? If the answer is yes then I would jump on this if I were you. I am in a similar boat as you though, minus the gift cards.
I am personally waiting to buy an Xbox One X after I pay my Best Buy credit card off because I also want to get a new TV along with the One X. I have a 4K TV currently, but it doesn't have HDR and I have a PS4 Pro so I have not felt a need to get the One X with the lack of exclusives on the One right now and Cuphead looks just fine on my OG Xbox One.
Yes I have a 55” inch TCL with basic HDR.