Echoing what Sally (and Liz McCargo) has suggested re: not spaying/neutering, at least at this young age.
There's a very insightful and thoroughly informative booklet by the "Puppy Culture" founder on the subject. It is chockful of the latest scientific/medical/genetic research and also takes into consideration the social "pressure" of neutering/spaying one's pet.
(BF should read a few pages if he prefers facts to oft repeated false tales)
Whether to neuter/spay is an important decision and so is its timing should you decide to have the operation.