The ONLY correct answer is, It all depends. There are different expectations of allowable carry weight or bulk, different kinds of cameras different torque vectors and potential wobble affecting stability. Some people use mainly short lenses, while others use long ones, hence long bellows extensions way more subject to the force of wind gusts. Doing things in a studio is quite different than out in the field, which for me often meant a lot of high altitude work in all kinds of weather. What other camera systems do you intend to use with that same tripod? Etc, etc.
Since I have a Phillips flatbed folder 8X10, my strategy has been to have on hand two different tripods for 8X10 shooting, or alternately, for long MF teles which can be even more difficult to keep truly stable than an 8X10. I have a large Ries tripod with spike feet which I love for its bully mass and sheer reliability under all kinds of conditions. But I also have a much lighter weight modified Feisol CT3472 carbon fiber unit, which certainly supports both systems well, but lacks the bully mass. If needed, I have equipped it with a hook below the top which can be used to hold a mesh bag full of rocks for sake of more weight, but haven't ever done that yet. I consider it as part of my old age insurance, if there comes a time the Ries is simply too heavy to hike with. I have a parallel pair of tripods for 4x5 usage : a lighter Ries and a lighter Gitzo CF.
I never use tripod heads for LF work - they're totally redundant except for shooting almost straight down; just unnecessary extra weight, and generally the weak link in the whole system when it comes to stability. If you absolutely must use a head with a flatbed 8X10, it should itself be of a "platform" design and low-profile, like the Ries head or large Gitzo low pan-tilt. And now certain tripods will accept relatively large diameter hemispherical half-ball inserts that lay low in the platform top of the tripod itself, in lieu of a center column (another worse-than-useless item when it comes to view camera work). But real ball heads with a stem on them - well, a basic understanding of torque vector physics should immediately inform you what a bad idea those are. Sinar has its own especially secure head design for sake of its monorails; but I just use the low-profile older Norma rail clamp itself.
I do have one of those old heavy cast Bogen-Manfrotto heads. It's perhaps the most solid choice for a traditional head for a limited budget. But it's nowhere near as stable as my no-head option. I kept it for certain studio applications. Hardly ideal in the field, unless you need something to double as a boat anchor.