OK, i have RRS BH-55, it is overkill which i love it very much, and if i have the option again i will buy it again or even more overkill than it, i use this head for all my cameras [digital and film MF and LF], sub zero issue, the only issue i have with this bullhead is that it is a bit heavy, many don't like to buy it because of this reason i think, but the design of this bullhead is insane, i have Markins bullhead Q3TR, they have M10 and M20 which can handle more than BH-55 but i didn't like the design, the weight is amazing.
The bottom line, if you don't buy the bullhead or tripod because overkill, then don't buy anything else, and what is overkill today, tomorrow you will need more than that overkill.