Welcome to the forums Venessa, your name is spelled exactly the same as my sister-in-law, and I'm pretty sure she'd be well jealous of your bikes too!
I have a somewhat older cockatiel who shares his (enormous!) cage with a budgie newcomer. As my vet pointed out, budgies are like that pesky little brother who keeps hanging around pestering and annoying the older siblings and sometimes it earns them a smack around the ears! Fang is very good in that he only gets a little cranky at roosting time if Valentino doesn't show him due deference to his seniority. They spend the majority of their day outside the cage anyway so they manage quite well.
Budgies and cockatiels are probably two of the very few species that I would ever consider housing together. I did experiment with my teeny tiny purple crowned lorikeet Lilly in the same cage as Valentino for a very short while, mainly because of the sheer size of the cage and Lilly's hyperactivity levels. Lilly is a tiny little thing but she and Val got into a few pretty ferocious fights which landed poor Val at the vet's with a (thankfully!) very slight graze to his eye. So that was the end of that experiment!
Even so, I put three food dishes in Fang and Val's cage because, just like your pesky little brother, Val keeps pushing Fang off the food dishes because he seems to think whatever Fang is eating must be more interesting! And sometimes two birds who have gotten along just fine for ages will decide they've had enough of each other and have a falling out, so you might just need to keep an eye on them and be prepared to cage them separately if need be.
Other than that, welcome to you and your feathered babies Venessa, they are very sweet indeed
