VPI Snow is safe, but it will definitely not create an all white snake. Snows look fairly white at birth, but they develop quite a bit of yellow pattern as they age. Albino Bamboo Pied, Albino Super Bamboo and Albino White Diamond are your best bet for a truly white snake, as well as the Albino Super version of the Black-Eyed Leucistic genes that produce the whitest supers.
You are at the worst part of the year to find a lot of what you want. Peak hatching season starts around October-November. Buying a female now won’t be much different than buying a female later this year. Either way you will have to wait 3-4 years, sometimes even 5 for them to be ready to breed. I say just wait for what you want, instead of going the “quick” route. I say quick because it may not give you the results you want.
Reptile keeping is a marathon, not a sprint. It took me six years to make an Albino Woma. It took me another three to make the Candino Woma. I have been trying for three years to make Albino Acid Mojave.
Outside of balls, I am four year into raising up rubber boas and likely have at least another year before I produce from them. It took me four years to get a clutch from my first kukri. My Rhamphiophis oxyrhincus will probably need to reach six years before they are ready to breed and that is another two years away.
I will caveat that the right combinations will retain some serious contract. My Albino Woma and Albino Acids are still neon yellow