Yes, wilting them reduces water content, lessening the chance of spoilage. You don’t want to dry them completely, just wilt them a bit and then they still work fine for an oil…
Your oil sounds lovely, and it’ll probably be fine. The plant matter can definitely add an interesting smell.
Ah, you have been influenced by Susun (a teacher of mine at one time), her instructions are great, to the point and profoundly useful.
As a tangental side note: In my experience, the debate on the two week or six week tincture maceration time is solved simply by understanding that if you use 95% alcohol (everclear or the like) with fresh plants, the cell walls will burst very quickly and your tincture will be finished much more quickly. If, on the other hand, you use fresh plants and a lower proof alcohol (like your normal 40% vodka or brandy), then the process will take longer. You’ll see what I mean, if for instance you make two tinctures of fresh plantain leaves, one with vodka and one with everclear.
I mostly use high proof alcohol and start using my tinctures after two weeks, but leave the plant matter in indefinitely (quite against herbal “rules” but it works for me). You generally need a smaller dose this way too and it tastes strongly of alcohol.
Exceptions are delicate flowers that I want to retain the taste of, like wild roses, where I usually use brandy, with an extra ten percent of alcohol added in… yum.
Too much information perhaps, but I will babble on for hours about plants if left unchecked