Jax,
My main trips each year are from the beginning of August until Labor Day and I like to fish.  As I'm sure you're aware, if you want to catch Walleye and Lakers that time of year you'll have to get down deep.  That being said, how deep really depends on the year.  For example, two years ago I was fishing between 50 and 60 feet down for good size Lakers.  Last year I only had to get down to 30 - 35 feet.  The issue is the water temp.  Lakers like it between 48 and 55 degrees.  I have a little Fish Hawk gauge that gives me temp readings every 5 feet so that gives me a pretty good idea where the fish are likely to be (at least with regards to thermocline.)
As for lures.  The simplest for me when going for Walleye has been Tail Dancers.  As you probably know they come in 15, 20 and 30 foot varieties and I generally carry at least a few of each.  I have even caught a few Lakers using the 30 foot TDs (that was on Jean maybe 4 years back.)  I have had a lot of success with Fire Tiger in August but I find anything with Chartreuse to be effective.
In more recent years I have begun fishing with with snap weights.  They are a pain in the ass since they are supposed to be snapped between 30 and 50 feet up the line from the lure.  That means a hassle when reeling in.  I find just tying the weights 5 feet or so up the line is actually a lot easier.  When fishing with weights almost any lure will do.  My favourite is the Vision 110 by Mega Bass.  Expensive but very effective and I've caught everything from  Walleye and Lakers to good sized Pike using a weighted Vision.  Again the brighter colours and I always use something with Chartreuse at that time of year.
This year as I mentioned in earlier posts I'm going to try fishing with jigs.  I got a lot of good advice on this board and some great pointers and ideas about jig and safety pin spinner selection from MT.  So this year I'll be carrying a lot of jig components - safety pin spinners, various creature baits (mostly curly tail grubs in white and chartreuse) and a wide variety of jig heads in a broad range of weights from ¼ oz all the way up to 1½ oz. (The Esox jig heads that MT recommended look incredible, by the way.)  Probably overkill but I'm not sure what my preferences will be or what will work for me until I give it a shot.  We'll (my wife and I) be heading out for WCPP early in August and be on the water for a grand 23 days of pure heaven.  We count on fish for our dinners and I've never had a problem.
Good luck on your trip this August.  Trust me, it may not be the absolute best time of year for fishing but I've always caught a ton and never been disappointed.