Hey Al - Thanks for the input. I plan to be doing this trip the first full week of June, like on the 6th or 7th, which is a Monday or Tuesday. I had already thought about it being crowded, but hopefully it won't be to bad on a Mon/Tue. We were leaning towards the Buffalo River and I have talked to a company in Yellville, AR about canoe rental and fishing.
I have fished parts of the Ouachita River and one of its creeks - Southfork Creek in Mt. Ida (scariest and best fishing trip of my life when I was 13) and have also been in and around the Caddo River. We wanted to explore NW Arkansas a bit but wanted to get some insight from some folks who have been around it a little. Sounds like this forum may be more Missouri based, so that's my fault.
Thanks Again!