Your producing art brother so as long as you put your heart into it, it can never be rubbish.
The melody may be out of your range but you could either transpose it or get someone else to sing it. I think your lyrics are good just maybe condense them into smaller phrases. Im as guilty as the next man for writing too many words and having to cut back when Im trying to write a catchy rhythm for them.
Either way stay true to your vision :-)
Si