Hello,
I have a decade worth of experience in animation and visual effects. (see my showreel on my profile page for examples of my work) and will happily do a good job on this animation, turning it around for you promptly. The second reference you give (Even-3d-world-Map) is something that is very achievable for you budget level if it is simplified a little (by that I only mean less rivers and types of trees and such, I assume you want it to actually look like the world with defined continents, so this would happen naturally when the planet becomes less about details and more about continents).
Thanks for reading and considering me!
Brett.