I've only fished Echo of the lakes listed. It's not in the greatest neighborhoods and there is usually some odd activity in the parking lot on the west side, but nothing has ever happened to my truck and I've never felt worried, just more aware. I've only fished it in my yak once but I've fished from the bank several times. Not sure about the others.
People have caught some nice bass out of Echo. I've caught numbers some days, been blanked others and never caught any hawgs, but I've caught many 2-3.5 pounders. The south end is deeper and there are cattails in the summer. Haven't been out there since last fall, so I'm not sure if they're in yet or not. Chartreuse and white spinnerbaits have worked best. Caught some on rattle traps and some on ribbit frogs.
I'd say it's worth a shot. There are snakes there, just like anywhere, though, and the water can be gross. Not that you would, but there is a consumption ban there, even though you will probably see some locals fishing for food there.