On clothes for tall guys - try finding XXLT. Nearly impossible but we do it for my husband. He has to have Talls or he looks like the guy wearing little kid clothes. There are options out there, but most will be bought online.
Cabelas, LLBean, REI and a few others make them. The thing is you have to be willing to accept that this will be one area where you don't get what you want weight wise often over what works. He buys carefully and thinks out every purchase though.
A few companies he can fit into in non-tall on odd items - Mt. Hardware is one.
His issue as well is he has broad shoulders - this plays into backpack selection (add in that extremely long torso for more fun!) 25" pads are needed as are the longest sleeping bags (which many companies don't even make!).
I'd say that tall guys get the biggest shaft of all. And even if you go as light as you can....your gear will still weigh more due the extra fabric, insulation, etc needed to work! Then again...if you are built like my husband, carrying 30 lbs is like me carrying 15!