i'd recommend not getting a Blade (or any other lifty kite) to start with. they can pack a punch if you fly them badly or if they get hit by a sudden gust.
four liners aren't any harder to learn with than two-liners and are more controllable.
for you're first kite i'd look at something around the 3 to 4m size. a buggy kite is a good idea as they are designed to pull more than they lift.
you can still use a buggy kite with a board, they're just easier/safer to fly to begin with.
what cougar says is true, but i'd say small kites in high winds are just as dangerous. they're much more snappy - i've seen a guy dislocate his shoulder whilst flying a 2m kite in high winds. i'd prefer a big, slow kite in high winds as they react slower but pull like crazy. the most dangerous time is launching/landing.
my favourite kite, however, is niether small and snappy or big'n slow.... 10m Speed!
c'mon the snow!

DSCN0182 by sod_the_taxman, on Flickr

DSCN0191 by sod_the_taxman, on Flickr