I think that’s personal preference if it was me and it is only one school I wouldn't bother, last year I took the GRE in November and it was super stressful studying for the test and doing applications at the same time. Plus your scores are decent and Im pretty sure UBCO (if thats the school you were referring to) the min to apply is the 50th percentile so you should be fine and your time may be better spent focusing on other aspects. But If you feel confident you could get a significantly better score maybe go for it ?