A wrist measurement between 8.00" - 8.25" (Type "J" Frame - Male) allows for a maximum weight of 225 lbs for someone who is 73" tall.
There is no minimum weight listed in the table. As long as you are under the max for your height, you are fine.
If you are over, then you will fall under another test,
Coast Guard Commandant Instruction (COMDTINST) M1020-8C - Allowable Weight Standards For The Health And Well-Being Of Coast Guard Military Personnel which uses "body fat percentage" to determine your suitability for service.