What exactly are you doing? Are you doing what would be called a gijinka (making an animal character into a humanized form) or half and half (not really a furry [full mascot style], but not really a human either)? You said hoodie, which leads me to believe more gijinka..Are you going to style a wig or something into the spikes rather then wearing a mascot head?
You're ideas seem to work. You can cover the shoes in whatever you want really..That's not a horrible idea if you never used the shirts anyway..
Do you want the "big hand" gloves like they have? Look for things like mario or mickey gloves in the halloween stores or party city. If not, I would go with regular glovesthen go to walmart and buy styrofoam rings. Cover them in paper mache, sand, paint and wear them..lol
For the hoodie, we would need to see exactly the picture you are going from to help you, so can you post that?
Cosplay DA Regular DA
Kumoricon 2014 (so far):
-Sora (Kingdom Hearts 2)
-Alice (Hearts no Kuni no Alice)
-Black&Blue Loli-style Dark Magical Girl O.C.
-Akaito (Vocaloid. Black & Red Ver.)
Dream cosplays for now:
-Tsuruya-san (Haruhi Suzumiya)
-Kagami Hiiragi (Lucky Star)