I skimmed through after reading the rest of the comments above. Here's my take:
The critique of the Metal Zone: It's not that you're getting a bad sound out of it. On the contrary your guitar tone is pretty good considering it's that pedal. HOWEVER, the problem is it's the WRONG tone for the material you're covering. It was hard to tell you were doing Old Time Rock n Roll until I heard the vocal melody in the chorus. So the problem is that you've got the wrong tool for the job. You're trying to use a hammer when you should be using a screwdriver.
The delay: lose that thing right now. It makes your solos sound like a muddy confusing mess. Unless that's your goal then go for it.
If you're used to these two effects and have used them heavily for a long time they may have become a crutch. I see enough players who hide sloppy technique behind high gain, heavy reverb, and huge delay. I'd say these two things are holding you back rather than helping.
Vocals: your voice doesn't have an unpleasant tone to it. But, take it from a guy who though he was a lost cause when it comes to vocals - Take. Voice. Lessons. Now. It's not hard and if you already are a musician it will not take long to learn. It is a skill that can be taught. Some people just sing naturally and others of us need some help along the way. You're one of the latter. It's an investment in yourself and your craft and the confidence you gain will come through in your performances.
But the band is tight and it wasn't bad at all. I'm just trying to give you constructive criticism to take it to the next level. The foundation is there, just fine tune these few details.