Without wanting to sound like too much of an old fart - and believe me, this applies to everyone and is in no way aimed at you specifically - how long exactly have you spent studying the groundworks laid out by Craig?
More specifically - he suggests studying Anneman and/or Corinda for at least six months.
I personally believe a serious student needs no other resources outside of these during the first six months of their personal study and even then, the supplemental materials should only be materials that help them in refining the skils and techniques outlined in these two tomes.
I agree entirely with that.
At the IMS mentalism night I performed three pieces - one of which was not in either of the two books, but was a tool with which I could use a technique learnt in Corinda.
Another of the three was one using a peek wallet, but then a peek wallet is really just a fancy way of using a window envelope (outlined in Corinda).
The third and final piece which I closed my act with was taken diretly from Anneman with virtually no changes made to the routine as outlined in the book.
At the Pentacle Club magic evening, I performed three different pieces - one of which was a throwaway gag (which was well received), one of which used a principle from Corinda and the other which bore no relation to either book, but allowed me to put into practice various things which I had learnt from Anneman.
Two shows, six effects, and only one of them not using anything from Corinda or Anneman.
So if you have really studied the two books (I am guilty of not having got Anneman until about three months ago!) then there should already be enough in there to not only get you started but also to keep you going for quite some time!
The problem with Jermays work (which I understand is excellent although personally have had no need to go through yet!) is that it is all effect based - there are very few outlined principles in his routines and certainly not such that you could study intently for a year and put into practice under a hundred-and-one guises.
Corinda, Anneman, and one of the psychological mentalism books (Tomo's Naked Mentalism or Psychological Subtleties) should keep you going for a long time - and the collective price of all of them is somewhere around the £70 mark these days.
If you have truly studied these two tomes then I have wasted my time in writing this reply - although I think you may perhaps be being a little hasty in a jump for Jermays work.
Corinda and Anneman is old stuff yes - but why do I still use their material (or at the very least their principles) in my act even now?
Because it's real world, hard hitting stuff.
Save yourself some money and buy a decent swami instead.
You wont find much better anywhere and it's nothing - a rigmarole with a few bits of paper and lots of spiel. That is Mentalism
Tony Corinda