honda boys i need ur imput

so heres the deal, my old man has a late 70s honda 750 four k sitting in his garage, right now it is an old man bike whith the windjammer fairing on it and the sadle bags and a trunk, but i will get to the point, i have never ridden this bike, to be honest it hasn't been run scince i was about 8 years old and i am 20 now, but r these a fairly decent bike to make a project out of?? like i don't know to much about this bike, would it be a fairly quick ride?? and would it be worth me buying it from him??

the lil guy