I think it really depends on what you think you will gain from either option.
I worked on the floor for a little over a year, and then got an amazing opportunity to go to the OR. My plan out of school was to work on the floor for maybe 5 years and then look at going to the OR, but an opportunity came up sooner so I jumped! I've been in the OR for 2.5 years now and I love it
Working in the OR, you will lose some of your "floor" skills, but you will also improve upon others, and gain LOTS of different skills. For me, working on the floor was an experience I wanted. It helped me feel more confident and grounded in my abilities. But there are some girls I work with who came straight to the OR and are excellent OR nurses as well.
The operating room is such a different world from any other sort of nursing, and so to go there first without any other experience is great if you know that's what you want to do. But if you have any doubts, some work on the floor might help you in case you go to the OR but then decide it's not for you. Then you have some other nursing experience as well. That said, most people who come to the OR and stick it out through orientation never leave.