Yeah, that is too bad about the Nizoral. The chemical in it is also somewhat of an anti-androgen, but, you are definitely not the first one to have a bad reaction from it, and T-Gel is a suitable substitute. The only problem is that T-Gel can also dry out hair, but, there have been others on this board that have bad reactions to the Nizoral but not the T-Gel, so I hope it works for you. If not, you could switch over to Head and Shoulders and give a third anti-irritation chemical a try?
And, YES, definitely ride out the shedding. It will happen, it has happened several times to me but it never seems to make a really negative impact on how my hair looks overall. In fact, my hair continues to improve despite the numerous sheds I have had from time to time.
If you do feel the itch to try something new, you could go ahead with the minoxidil as you suggested in your first post, or, you might also consider using 2% spironolactone. It uses the same basic strategy to fight DHT as Finasteride, but in fact, the Finast and the spironolactone each combat one of the two strains of DHT in the blood more effectively than the other. So, a Finast/spironolactone combo would be a very potent and synergistic anti-androgen treatment. Just some food for thought, future weapons in your arsenal against the hairloss...
Good luck!