As a BUF native, I agree with what the others have said already but want to add my opinion on the 3 bridges to choose from.

#1 peace bridge. Probably the easiest way to get across BUT can back up with truck traffic.

#2 rainbow bridge. Best for quick crossing though a bit out of the way, you can more than make up the time due to the truck traffic at #1 or #3. No commercial traffic allowed here.

#3 queenston-lewiston bridge. Mainly designed for commercial traffic this bridge has the greatest probability of being backed up.

When he lands he should google the bridge times and then choose. I would also recommend #1 provided there was no wait time. If there is a wait time then #2 without a doubt is the way to go.