questions / dilemas like these can best be answered by asking "what would Shri Guru Nanak Ji have said if he were alive".

There is a story of how he was going to have some tying the thread ceremoney performed on him when young (parents were Brahmins). He questioned the validity of it and how would it help him get closer to God.

The same applies to having long hair. Cutting it doesn't hinder one getting closer to Vaheguru - which is what we are aiming for in life.

Kesh and Turban is an identity gifted to us by Shri Guru Gobind Singh Ji. To my knowledge there is nothing in the Shri Guru Granth Sahib which says that keeping long hair will bring us closer to Vaheguru.

As Sikh's we have to constantly question many of the practices and rituals we follow and ensure that we follow the path which takes us closer to Vaheguru.