i, too, am looking to take a combination of finasteride and dutasteride (and then possibly advancing to dutasteride by itself). but i dont know about your case; if you're keeping just fine then i would say to stick with finasteride and start on minoxidil. i dont think finasteride or dutasteride has very good growing capabilities.
im considering dutasteride cause i feel my finasteride is doing well enough to maintain what i have.