Its not just score but profile as a whole people with 640's can get approved for it while others in the 700+ range are denied it.. Need to know alot more about your profile such as new accounts, baddies, scores, etc, etc.. Just not about putting a score on it. You could open a syncrony store card as well as it is 5% as well and easier approval criteria if that is of concern.
My guess is it would be an approval.. although there are no gurantees in the credit world as stated people in 700+ get denied while people say 650 will get approved.. Worse case is it is a loss of 2 inquiries maybe 1 if denied or obviously an approval.. The syncrony card exists as mentioned as well which is a TU pull and alot easier to get a bigger CL as well that is 5% or 0% financing. Either way best of luck what you decide to do