I think there are good elements to your regimen, though I think by and large the jury is still out on X 15% Plus. I for one, am really excited about its possibilities, and will be ordering some as soon as I get clearance from Dr. Lee with the whole consultation. In any event, the important thing is that you're on the Big 2, minoxidil and finasteride. Tricomin has been anecdotally vouched for, and there is a certain degree of science backing it if you look at Tricomin's web site (but note, these studies were never officially completed/published), or Folligen's (who is the original creator of the Tric formula) web site. That's the best place to get an idea of the mechanisms behind how it works. Some doctors have questioned the claims that CP formulas stimulate growth like they say, though, so just be aware. It is my understanding CP is more commonly expected to help with the healing process post-hair transplant.
Your vitamin tablet (without knowing the ingredients, but assuming it's "all natural"), biotin, and silica elements are not proven to help with hair loss in any way. Omega tablets are extremely beneficial for your overall health, though I don't know of any studies that indicate it's benefits for regrowing hair. For general health reasons, you should add anti-oxidant tablets/capsules to your daily routine (i.e. a green tea pill, fruit pill, etc.).
Please post your experience with Xandrox 15% Plus, and keep monthly pictures if you can in conjunction so you can let the rest of us know who are excited about its potential.
Good luck!