The graphics card will fit in the motherboard, no worries there, but in order to 100% confirm that the graphics card will fit with your case, we'd need to know both the make/model# of your 760 as well as the make/model of your case.
The max GPU length for that is 275mm. The GTX760 seems to range from 210 to 260mm so it will fit.
Does al mid tower range case support GTX 760? Because i m not sure about Elite 310. Its depend on budget.
But its sure i m not going for slim/small case. I m going for normal size case like Elite series.
Will it be okay?