When I look at the rated weights you give, it looks like it would do fine, even with the DX head. I've never used that - I bought mine as a combination of a Manfrotto 141 RC head and the 700DX legs. At the time (must be at least 7 years ago) I liked the Manfrotto heads but not the legs, or rather the construction of the locks. The 3057 head looks a lot like the 229 so I guess it is fine too.