Vocal Booth/Amp Closet Solution?

[Myriad_Rocker]

I hope this is the right forum to ask this. If not, feel free to trash me and point me in another direction. Preferably with tact, though.

Would this be a viable solution for a vocal booth/amp closet? It could be used in conjuction with some rigid fiberglass panels that I have made or I could just use this by itself.

The Link

I guess the alternative would be to get some more fiberglass and burlap and make some more panels. However, the above solution would be cheaper. I don't have enough free panels right now to do what I need to as far as treatment in the closet.

A crappy drawing of my closet follows...

Any other advice/pointers would be appreciated. I'm basically looking to dampen the sound. Soundproofing is not really a concern for me. I just want a nice dry vocal/amp sound.