Your desire and ability to perform all these tasks should be considered when you make the decision to hire a handler instead of doing it yourself. Professionals often do a better job. They may not show your dog the same way you would, but a professional's reputation is on the line every time that he steps into the ring. If you select a handler with a lot of experience in your breed, you should get superior conditioning, grooming, and ring presentation. Not because you are paying for it, but because the handler has years of experience performing those tasks on hundreds of individual dogs in your breed.
Professionals are at a lot more shows.
The ability to travel every weekend is often critical to finishing a dog. Coats come and go, conditioning comes and goes, temperaments are better or worse, and entries often happen at awkward times. You need to show your dog when he is ready to win, whether or not you can make the shows. To not do so can lengthen the time and expense it takes to finish your dog. Now let's discuss the negatives of hiring a professional handler.