Ok, one thing at the time.
First off, most of your questions can be answered with a little research in the forums here. Get familiar with the search option, or better yet, Google. I Googled the following: soapmaking forum zap test guide and got this-
The Zap Test: A Visual Guide
It is a sticky on the CP forum.
Second, it sounds to me like you need to do a whole lot more research before you start making anything. Your stick blender(immersion blender) is fine. I would not recommend you use a whisk for bringing things to trace. Your arm will get really tired.
Third- the castor oil is the correct stuff.
Fourth- you don't need Sodium Lauryl Sufoacetate. At all. Some more experienced soapers use it, but it is not necessary.
Fifth- you don't have to use poly 80 or vit E to preserve this. Make small batches until you know what you are doing.
Sixth-here is the
soap calculator I use for almost everything. Use the KOH 90% options at the top to account for the impurities in the KOH.
SoapCalc
Last- you need a whole lot more research before making any liquid soap. If you have not made bar soap, you need to do that first before venturing into liquid soapmaking. You need to learn the lingo and the processes. If you have made bar soap, I apologize, but it does not sound like it. Do go to the cold process area of these forums and read every sticky before venturing further. If you have made bar soap, and are now ready for liquid soap, here is a video to get you started:
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