a normal bred to a DH Snow would give you normal appearing 50% DH snow babies.
If you are going to spend the money on a female DH Snow, why not pick up a male DH snow too?
Make sure you are getting them from a reliable source. DH VPI snows generally cost around $9000-10000 per pair. Female around $7000. Males around $2500-3000. DH Joliff snow pairs can usually be bought for under $5000 but produce a lower quality snow IMO.
get the DHSN pair and try your luck. Worse case is that you don't get the snow, but the positive is everything else is a morph... Axanthic, Albinos, DHSN, etc....
Seems like a good deal.. Gotta love double hets....
If you plan on picking up some DH snows, I would try to figure out a little of the genetics. It is not that hard to understand for basic recessive and codom/dom traits, but when you start mixing things it can get complicated.