You want a drone that stays in the air and takes clear footage, not a toy that breaks in a week. A solid 4K model with extra batteries should last you several years of filming. If you buy a high-quality kit now, you won't have to upgrade next season just to get stable shots.
Drones usually follow a yearly release cycle. Last year's flagship is often the smarter move during summer sales. You get the same stability and nearly identical camera specs for a few hundred bucks less than the newest version hitting the shelves.
This plan works as long as you are disciplined. If you still have a balance after 18 months, the interest rate jumps to the standard high APR. Make sure the drone is paid off before that window closes or the purchase becomes much more expensive.