On all 4 of my jets i have just routed vent from top of tank straight down and out also have done to the side but what I do make is a right angle fitting so the vent faces forward with airstream going over an open pipe at 90deg that makes for negative suction on vent (venturi effect) not want you want. That's how I have ran mine and never had a fuel issue ever.

When I did the vent for my EF Yak 54 88" that's how I was advised to do the vent route similar to yours in the pic but never done jets that way.

Alan