4-5 lb is a pretty terrific catch, nice job. I would be thrilled with 1 lunker that size for a short trip.
Anyways, Fellsmere Rez in Malden is pretty good with tons of shore access and nice size bass.
I would recommend the dam between the Upper and Lower Mystic Lakes. Close parking to fishing, several spots to fish and usually can catch a few.
I have a 9 year old and this is our after-dinner for an hour spot.