Whether your snake is a breeder or not, the general health is still not measured in length. You can have a snake that is 2'6" and very skinny or very fat or right in the middle. My male pied is almost 3' but he went off feed for several months and is only about 600g right now. Too skinny!

That being said I've seen some yearling snakes well on their way to 2,000g so yours is probably not that uncommon.