I'd go with the Mefoto or a similar one from (not on your list), the Sirui T-005.
-- Inexpensive, both under $150
-- Kept short (don't use the 5th leg extension) with a hanging weight I think they'll be better than handheld, especially at exposures longer than 1/4 sec.
-- They could double as a makeshift monopod
-- They are pretty lightweight for your load & will require careful attention...I wouldn't walk away from it in any sort of wind.
-- Both the Mefoto nor the T-005 have columns permanently extended, making them even less steady.
If you had the bucks I'd recommend the Feisol 3441S without any reservation...I have one and it handles my 5D Mk III with 70-200 2.8 just fine. But the price doesn't fit your criteria....so......
I wanted something even smaller and lighter than my Feisol so I just did the same research you did...and ended up ordering the Sirui T-025X for $250. The carbon fiber absorbs a bit more vibration and the column can be removed. The Feisol was light at 4 lbs, the Sirui will be even lighter at around 2 lbs. Can't wait to try it out.
Even if you graduate to a better tripod later you may end up keeping the super tiny one for backpacking, so you won't be wasting your money.
I did the same thing, my T-025X should be here tomorrow.