Help with Burlington to Union station?

I’m going to a concert at Scotiabank arena tonight from Buffalo NY. My plan was to take the train from the Burlington GO station to Union station for Scotiabank.

It looks like for my return, my only options are 11:04pm or 11:47pm to get back to Burlington. Really it’ll only be the 11:47pm because I assume the concert will end at around 10:50pm.

Is this still my best plan, or is there something else I should consider?