I think it depends on where you shot the deer and what it meant to you. Where I live Ny/VT border you do not see many big antlered deer. The biggest buck in the surrounding towns shot in any given year would prolly be right around 120. Most people I know here mount 8 pt bucks..but they dont score real high because the antlers just dont have the mass as they do in the mid west. The problem around here is that people shoot pretty much anything with horns, therefore the odds of seeing a 3.5 yr old deer is about zero. I live in 5s ny.
Also I say there is nothing wrong in mounting a first buck... bow or gun. Im getting a 7 pt i got this yr mounted because its my fist archery buck.