I want to thank all of you (especially Alex) for the replies.By suggesting the recommended places for an answer, I now know the following:
1st seat - 2 passengers
2nd seat - 3 passengers Luggage - 115 pounds. Total weight - 865 pounds
However, I wasn't planning on placing some in the front passenger seat, some more in the rear passenger seat(s), and some (115 pounds worth) in the rear in place of luggage. I had planned on putting them in the rear area which is to be used for carrying material. Once again, thanks for the input!! Especially you, Alex!!