Your 1450 mAh LIFEPO4 battery pack should indeed be more than enough for an hour straight run. But do not try to go 90 minutes or more on it, on one charge.

A healthy 2S LIFEPO4 battery pack is fully charged at 6.6 volts (3.3 per cell). It will also keep the voltage above 6 volts for 90-95% of its capacity. Then it will go empty pretty quickly.

Just make sure that it is fully charged before each use, always balance-charge it at 1C charge (1.4 Amps in this case) and do not ever let the cells go below 2.2 volts each (Minimum 4.4v for your pack).

LIFE (or LIFEPO4) batteries are pretty good. I run a 2000 mAh 2 cell pack on one of my 1/8 nitro buggy's receivers, powering Savox 1256 and 1258 servos ( Savox servos are known to be Amps hungry servos).
I can go up to 1 and a half hours on one charge without problems. And this for over 3 years.

Hope this helps.

regards,
DLD. _