A good standing desk and chair should last you ten years. Most people buy the cheap version first, it wobbles or breaks, and then they buy the one they actually wanted. Save yourself the double spend and go for the heavy steel and commercial-grade motors now.
November is when the big brands clear out inventory. Last year's models are often identical to the new ones but see deep discounts. If you use the Discover it® Cash Back (Discover), you can spread that $1200 cost over a 0% intro APR for 15 months on purchases and balance transfers.
The 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not a gift. If you still have a balance when month 16 hits, the standard interest rate applies to whatever is left. Pay the full $80 every month to keep the financing cheap.