As with most anything else, YMMV (you mileage may vary)
Some folks are very sensitive to coconut oil, others are not. A soap made of 100% coconut oils should be very drying, but with a 15% superfat, is quite mild! Some folks (like me) are very sensitive to palm oil ... it dries my skin like an alligator ... but I know it doesn't do that to everyone. The combination of various oils can greatly change a single oil. For example, adding an oil that is high in linoleic fatty acids will balance an oil high in lauric fatty acid (at the right proportions)
Just be careful about taking what you read in books and the internet as gospel. Some could be true and others total fallacy.
I spent the first two years of my soapmaking (1999 & 2001) experimenting with single oils soaps, then combinations of 2, then 3, et al oils until I found the recipe that worked well for me & my customers.
Regarding lye ... the MSDS (material safety data sheet) recommends diluting any spilled lye with water. This weakens the lye exponentially. Do not use vinegar to dilute, do not just brush it off (unless you know where it is going ... hate to be surprised by stepping on a piece of lye!)
I wouldn't start off with goat milk until you get a feel of the steps of soap making (there is a pictorial on my site that shows milk soaping)
30% coconut oil
30% olive oil
30% lard (or crisco)
10% canola oil
You won't need the glycerin since it is one of the by-products of soapmaking. Castor oil will give you creamy bubbles (like that of olive oil) and since you already of olive oil in the mix ...
Here's another:
30% coconut oil
30% lard (or crisco)
25% olive oil
10% canola oil
5% castor oil
How large of a batch are you wanting to make? (for starting out, I recommend using at least 3 lb of oil). I can quickly zip the amount of water and lye for you.
Lard helps slow down trace so you have more time to work. Any of the 'hot' EO will speed trace (like cinnamon, clove, et al) With FO, the florals will speed trace. If you want to make a lavender soap and decide to use both an EO and lavender buds, be sure to grind the buds so they don't look like mouse turds in your soap.