You have a lovely voice, also the mic that was linked to you seems a little unnecessary. There are a plenty of great working horse mics for a budget price, this comes immediately to mind - Shure SM58, that has been used for years by professionals :)

You definitely have a lot of passion for this and practice makes perfect as they say, keep at it, wishing you the best! And when you do get that microphone, it will just be a nice step up in quality, tools are nice, but its how you use them that truly counts!

Cheers!