no idea about the sd adapter card. mine came with a 8gb lexar sdhc 100x platinum II card and it seems to work fine.
what do you want the reversed ring for? to switch the 1.7 around and use as macro? or to add onto another lens?
i've bought all my rings from china/hong kong. so far they've all been fine if a touch slow to arrive to australia (on average between a fortnight and a month). you just have to be aware of what you're buying. i got confused with the male and female threads...
if you want to attach two lenses together, lens side to lens side (as opposed to mount side) make sure you get male threads on both sides.
the 50mm 1.7 is a 49mm ring if that helps?