Dude your running your arms into the ground. I wouldnt EVER set aside a day to waste training your arms. If your lifting right, you wont need to. Your tri's should be getting blasted on chest and shoulder day. Your bi's should be getting blasted on back day. Shit, istead of doing arms on tue, I would do a bunch of olympic movements on tue. You could do chest mon, and power clean, deadlift, snatch on tue. I'd take wensday off, then do shoulders on thur and legs on fri.
Just some ideas to throw out there thats all.