Yeah, I know what you mean, I have a low level account on NA, and it's really laggy for me too at times, especially last hitting and team fights can be a pain.
Suri is playing from US on EUW with us regularly, so maybe you get used to it after some time..
I don't mind playing with lower levels if you decide to level a new account. Leveling up a new account is a hell of a job though..
Maybe we get more people from NA that can play together and start a group after some time. If you have friends playing with you on NA, ask them to join forums here too.