My plan is to upgrade my jinrokh HC MH weapon. Leave my tortos normal weapon alone. Simply because we can get jinrokh and we are doing well In my guilds tortos progression.
Also I would say in terms of difficulty my guild sees it as jinrokh>jikun>horridon>ironqon>tortos
But yea. HC MH first then HC Tier legs for me. But I will prob wait with leg upgrade untill after we have cleared TOT just to see what we can kill on HC.