I have an early 2013 13 rMBP and love it but recently got a new job which allows me to be able to upgrade. I purchased it using the finance option through Barclay ( had enough money at the time but didn't want to drop all the money at once and just started building my credit) If the limit on my Barclay card is lower the price of the new MBP I plan on getting, (top 15in model) will I be able to pay a portion in cash/debit and then the remainder on the Barclay card? I plan on selling my 13in which would allow for that.