Well if you do the 6 scouting combine + skills, that's 60, then if you focus on age and go by TSP maybe interviewing 10 players is enough (something like the 6 best 18yo and the 4 best 19yo), so 20 more points.
With 100 draft point you can interview 20 players, I think that's a bit overkill for a 48 players draft... but yeah 80 draft point is a lot