Was I fit into the right boots?

You guys were great with my last question so figured I’d come back… I was recently fit into Technica Mach 1 120s. I am 5’10 and 165-170 pounds translating to roughly 77kg. I am just starting again after taking a long hiatus from skiing. I skied the boots two times now and found 1) pain and 2) difficult to not stay in the back seat. Is this too much boot for me paired with a 179 Dynastar Mfree 99s?