I defeated the Ender dragon ages ago, and I had everything I needed to go and explore the outer End, but I decided to do a bunch of other stuff first, since I thought that the elytra wouldn't be that big of an improvement. I was wrong, I've had this thing for like 10 minutes and I already rely on it, it's so useful being able to fly and travel about 3x as fast as on foot.
My new #1 priority is now to build a bigger sugarcane farm to make rockets. I already have one, which I thought would be enough, but I'm burning through rockets way faster than I'd expected.
Congrats on the elytra! Always an exciting accomplishment.
Now you also need a creeper farm (or a generic hostile mob farm) to farm gun powder .... a nether porthole shortcut to a desert to gather sand ... and a sugar cane farm.
Oh .. and later on a phantom farm to gather Phantom membranes to endlessly repair and renew your elytra.
I was over thinking about the way I build my worlds .... I got ahead of myself with the sand because that's usually a thing I start collecting along with gun powder to make TNT