Most everyone here is using bleach in their vinyl pool and vinyl is vinyl no matter what brand of pool you have so that is not a problem.

I don't think that the Baquacil amounts in your water should be a problem for your grass but I don't know for sure.

If you can monitor the pool water frequently and keep the chlorine level up at 15 ppm, you might be able to get the conversion done in 3 days or less (I believe someone was able to do it over a weekend) so you might not need to drain at all.

Good luck!

Peter