I am no expert on either oil off the top of my head (cue soapbuddy!!), but those two ingredients -- castor oil and jojoba oil -- have very different INS numbers. I don't know the exact recipe, but if you put the original recipe with jojoba oil and then the substitution with castor oil into
http://www.soapcalc.net, it will tell you the difference in the batches under several different categories, like hardness, conditioning, and bubbling power. Soap Calc also tells you if the recipe will produce soap in the "target" INS range of 136-165. I try not to go outside of that range, and I haven't had problems with soap that fell within that range (and within all the other category ranges).
Patience is definitely the most valuable tool in soapmaking! Some people do a tongue test to see if the soap is still zapping that you may eventually muster the courage to try (I hate the taste of soap!). They touch their tongue to the soap bar to test for a battery-like "zap" which indicates a remaining overabundance of lye and an unsafe bar.
In any case, always do a test spot first. Sounds like you are geared up and ready to jump into soapmaking. Warning: This hobby is addicting! I call it my "habit"!