Hello, everyone!

New to the forums. I'm definitely interested in learning both Latin and Ancient Greek. Problem is, I can't decide which to study first. Realistically, I'll be devoting the next few years (and the rest of my life, for that matter) to mastering one of the two, before I'm comfortable attempting the other. I suppose I'd like to hear ya'lls experiences and opinions on the matter.
Which should I learn first? Why?
(I'm leaning towards Greek. From what I've heard, it's harder to master than Latin. Makes me want to tackle it first.)
If anyone has or is learning them both simultaneously, I'd like to hear about it, so that I know it can be done. (Even though it sounds downright impractical.

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I'm so glad I found this place!