¡Bienvenido a los foros, Robby! Welcome to the forums, Robby!
You ask whether you should learn Spanish or Italian. My answer (with tongue quite firmly in cheek): yes, of course you should learn Spanish or Italian.

Perhaps you should learn Spanish
and Italian. Whichever one you learn first will most likely make learning the other one somewhat easier for you.
Oh, wait, maybe you wanted to know which one you should learn first. That depends on which one has the strongest case for starting first depending on your reasons for learning each one. It may come down to which one appeals to you more srtrongly.
My personal bias is towards Spanish, mostly due to the difference in numbers of native speakers of each language worldwide. But then, I'm from North America, and Spanish is somewhat more useful here than Italian is. However, it's also true that the fact that Spanish is my strongest second language is due entirely to circumstance rather than to choice: my secondary school offered first-year Spanish starting in odd-numbered years and first-year French in even-numbered years, and I was first eligible for a second language class in an odd-numbered year.