I agree. A 4k is going to be feel pretty miserable if you gave anything in the 3k. If you just want to find out what you can do, Id suggest picking the kilo and 3k or 4k based on your age group, then finding another time to do the rest if you are really curious (or something like that). With a proper 1k and 3k effort you can probably guess the rest.
So its not bad 'form' to do them all, and by all means you are welcome to, but whatever you do first and second will be the only reasonable efforts.