I don't know if there is a correct answer to this. In my own body butter I like to use oils that absorb quickly and aren't heavy. HO sunflower, meadowfoam, kukui nut, fractionated co.
I'd substitute camellia oil for jojoba.
Just as a side note, I love raspberry or pomegranate oil in winter body body because they "act heavy", but absorb well.
That will be a greasy recipe. I haven't tried cornstarch on body butters but I have used mango butter. That's a butter worth having for soaping and B&B whips, creams, and lotions. It can help reduce the greasiness you'll have from the shea.
Also, you may want to consider halving the cocoa butter. That body butter will be softish hot weather but if you get colder temps, it will be much harder and will require more effort to use it.