We have used the NeoPixel strips with no issue powering them from the CORE/PHOTON’s 3.3v output , but I must admit that this was for a 24 LED ring only. Using 3.3v enabled the NeoPixel’s data line to be directly connected to a digital output on the CORE/PHOTON without any level shifting.
Not so sure that you could get away with this for 60 LED’s.