Well in response to the Fire/Ice Fang or Fire Blast/Ice Beam question, I'd say definitely go with Fire Blast and Ice Beam. Your main targets of the moves (Forretress, Scizor, Breloom, Gliscor, etc...) all have weaker special defenses. For example, Gliscor is only 2HKO'd by Ice Fang, while he is OHKO'd by Ice Beam.
You did mention using an Adamant nature, though, so that would definitely hurt Ttar's ability to effectively use special attacks. Its base 95 SpA is certainly workable, but a Defense lowering nature would be preferable if you're going mixed. The funny thing is, Fire Blast and Ice Beam are still out-damaging the fangs in most cases even with Adamant nature (I ran some calcs), although you do miss some OHKOs.