Hello,
Love the pump too but not the clamp. I always found it flimsy and it broke after a spill. I changed for a mount that came with a Topeak mini-pump which screws between the frame and bottle cage. It also has a velcro strap to secure the pump in place. It's much more solid and it frees the top tube for when I lift the bike over my shoulder. My shorts also got caught in the old clamp from time to time. I don't understand why Topeak doesn't sell the Morph with the same mount as the mini-pump.
The "light" load is the tent on top of rack, sleeping bag and pad in each pannier. I had a complete change of bike clothes and one of camp clothes (long sleeves for bugs), perhaps two (don't remember). I did carry small baseball cap, toileteries and first aid kit, tools, camp towel, pannier rain covers (not sure) and a map or two. My camera kit takes all the room in the handlebar bag. There wasn't much room for food except for bars, cookies, etc. It was packed very tightly. So, yes I was pretty much self-contained, though I like a little more comfort (like two bike kit instead of one). I had sold my GT-54 and not bought the T-42 so I used the GT-30. I would've used the T-42 for a bit more room for food. The T-42 are a bit narrower so they might cut better in the wind.