[Houston Remodeler]

Andy,

1- you can go online to nearly every manufacturer and download a PDF of the specifications. Sometimes called a 'tear sheet' You will be able to find what you need. The supplier can also email or fax you one.

2- I prefer CBU, but drywall will be just fine

3- the 5 gallon bucket method works just fine, just keep an eye on your proportions and mix the parts well when they are dry, then again when wet. I pour my dry pack without any water at all, then spray it on top. I only need to mix up as much as I need, all in 5 gallon buckets.