I'm not really going to give you suggestions, just relate to you what I (have) use(d) for my 400mm f/2.8 AF-S.
My main tripod is a Gitzo 1410 and my secondary one is a Giottos GB5200. Both are aluminum and heavy. I find that they both provide an extremely stable platform for this lens.
My main ballhead is a new Arca-Swiss Z1 sp and my backup is a Giottos MH3000. I used the MH3000 for over a year and have found it to be very good. The Z1 is also very good and rated at over 100lbs. I also use a Bogen 3421 gimbal head. I usually have it mounted on the Giottos GB5200.
I used to use a Bogen 3021 Pro as my secondary tripod. But it was not stable enough for me.