i have the 190pro tripod plus 141rc head as my light tripod kit, and i have been using with all kinds of cameras, all i can say is that if you are planning to shoot alot with 4x5 stay away from that tripod.
I had a light field 4x5 camera that i used to shot outside with this manfrotto, the tripod once have been set up and on the ground is quite difficult to reset or readjust, basically is a pain, moving center column sucks with a camera on it.
If you like to recompose, compose, recompose again, move that leg, move the other, get yourself a studio tripod.
Otherwise the 141rc head is quite good, but again, i will not use it with a heavy camera on it, in fact i learned that with tripod things not geared stuff is a pita.
just my 2 cents