i also have to go soon, but can't you kill the rathian in the village quests?
and btw you don't really need that armor, unless ur going for the weapons.
the best armor is rathalos and the azure rathalos and pink rathain armor :P
lord of hunters hr5, land and sky in village left. trying fatalis
weapons: garugaGS,barbaroiGS,eternal schisms,eternal strife,corona,upper b-axe,frost edge+,expert sword,wolf blade,gradios ultimus,legendary blades
armor: garuga,rathalos soul,rathian heart,esp helm,diablo,monoblos,rathalos,basario