Replying to Accessories for T2I

Hey NS,
I'm about to buy a t2i and am thinking about what accessories to buy along with it.

I have realized that I will need some sort of stabilization, so I have narrowed it down to a:

GlideCam HD 2000 ($280)



or a

CVP SM1 shoulder mount ($105) which is used by philip bloom http://www.creativevideo.co.uk/public/view_item_cat.php?catalogue_number=cvp_shoulder_mount



Other accessories I am thinking about are:

ZFinder Jr. ($250) http://www.bhphotovideo.com/c/product/682689-REG/Zacuto_Z_FIND_JR_Z_Finder_Jr_.html



IDC Follow Focus ($400) [note, I would get the DFocus if it was in stock] http://www.idcphotography.com/kart/index.php?p=product&id=145&parent=30




I would like to keep the price as low as possible, so keeping that in mind, what are the most essential of these four products for filming skiing and for HDSLR filming in general?

Thanks!
Reed