If you've got the money, a Sachtler would be more than adequate. From my simple 810 work I think you will need a second tripod or at least additional support in order to get a properly stable system though.
CF tripod? You want that one we looked at at PMA--Gitzo GT5540LS. I've been very happy with mine. For big cameras and long lenses I use it with an Arca-Swiss B2.
Still not clear what you need the carbon fiber for. Do you need manufactured CF sheets for building a ULF camera or do you need a tripod manufactured from CF to support a ULF camera?
If it is a tripod, get a Gitzo CF. I have one in a smaller than ULF size, but I find it light, durable, very solid, and fast when needed.
CF tripod? You want that one we looked at at PMA--Gitzo GT5540LS. I've been very happy with mine. For big cameras and long lenses I use it with an Arca-Swiss B2.