'62 40hp johnson rk24 general prop question

[actionjackson]

14 foot crestliner arabian(fiberglass) weighing app 380 lbs with a'62 40 hp rk24 johnson. i'm new to boating and am not sure of pitch, but it is aluminum. will a prop that seems to work fantastic for two people on the boat absolutly bog the motor and not plane out with 4 people or much more weight