The zap test won't burn your tongue. You just lightly touch your tongue to a bar of soap and you will know right away if it is lye heavy. I would suggest tossing it and trying again if you left out that much of the oil. It will be lye heavy and you wouldn't want someone to get a bar of lye heavy soap by mistake.
Might I suggest a soaping notebook? You should take notes each time you make a batch so you don't repeat mistakes. Also it is wise to keep your recipe in front of you while making soap because as you found out, it is extremely easy to omit an ingredient, get amounts wrong or make other mistakes. I highly recommend the lye calculator at Majestic Mountain Sage. You can make up your recipe and then print it out. It is good to have them as you can file them and go back to the ones you like.
Sugar scrubs are wonderful, but do not forget to add preservative. Even if your recipe has no water in it, remember that wet hands will most likely be using the scrub and will introduce water into the mixture and allow bacteria to grow. You can do some research online as to which ones you would prefer to use. I try to stay away from parabens myself.
For your soap, I would like to suggest you start with a trinity soap. 1/3 olive oil, 1/3 coconut oil and 1/3 palm oil. This will give you a nice hard bar of soap with lots of fluffy lather. Once you master that, then you can move on and create other recipes. Castor oil is very nice to add to a castile soap at a 95% to 5% ratio. Just remember that castile soap does not cure out in 4 to 6 weeks and can take months before it is ready.
When searching for fragrances, buy high quality from a reputable company like MMS or Brambleberry or some of the other online soap suppliers. Look for fragrances that do not accelerate trace. Lavender is a good essential oil to begin with and there are many fragrance oils that behave well in cold processed soap as well. Once you settle on a recipe and know how it behaves, then you can start working with trickier fragrances. Some essential oils, such as rose geranium will give you soap on a stick, so I would avoid that one until you are well experienced. Same with fragrance oils. Many of the water/spa types as well as a lot of florals will accelerate trace, so read the descriptions prior to purchasing.
Good luck and if you need any recipe help, let me know.
