bolded the stuff in my post @ your rmt. also piloswine really does appear and can potentially be an issue for you, as well as a combination of other ice/ground types.
thinking about it, you're either regice weak (which can be an issue!) or you're ground/rock/piloswine/strong physical attacker weak (with rapidash versus alomomola) - you could consider replacing something else so you have both of them? otherwise there's definitely going to be some sort of weakness there - unless you go spikes > drain on cacturne and replace garbodor with alomomola, keeping rapidash. you'll have one less set of hazards, but ya. there's no other real way around that given what you've said you really wanna keep. :x