Stubai 6 point in steps or a full 10 point from Black diamond, not sure of the name but they're tough. The Air Grivel lights will break eventually, I had a pair and now only buy burly when it comes to traction.
I'm currently rotating daily between 4 pairs, two pairs Hunter GTX, one Tibet and one Tibet High. I like the Tibet best, I use these well over 200 days a year in the field and don't wear them to work. If they work for your feet they'll be the best boot you ever owned. I'm debating on whether or...
Luke is right, Denali Llama is a good choice for what you describe and your size. If after you got some time in the boat and wanted to try some faster water with large load it would it also be the boat you'd want from the Alpacka lineup. I am similar to your size and used a Llama for these...
http://www.reallyrightstuff.com/s.nl/it.A/id.4201/.f
or for 45$ more you can upgrade to QR clamp. Additional weight comes with the convenience, however, it's not much.