You want a clean dual monitor setup so you can stop hunching over a laptop screen and actually get through your workday without neck strain. Buy decent gear now and you will not have to replace it in two years when a cheap hinge snaps or a panel dies.
Watch the release cycles closely because tech brands drop new monitors every fall, which means last year's proven models routinely get marked down. If you shop during the back-to-school sales in August or wait for Cyber Week in November, you can easily shave a chunk off that $850 total.
Remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still have a balance left when those 15 months are up, the standard interest rate kicks in on whatever is left over.