Unless there is a problem with the q factor or initial cleat setup, I don't see the need for new pedals.
Riders who have had knee injuries in the past often opt for pedals with lots of float, esp. speedplay. Speedplay road pedals offer a lot of range of adjustment, as do road pedals/cleats in general. Again, this may not be an issue if you are comfortable with your current cleat setup.
I'm also mystified, as are others, as to why you would want to pay $330 for 1 lb lighter wheels if you are planning on gaining 10 - 15 lbs. of weight.
I don't think it's necessary to gain weight in order to get stronger, if that's your goal, which I assume it is.
Having said that, when people are intent on spending money, they almost always do, so, enjoy your new gear when you get it!