I fly the EMB a LOT. My recommendation is try for 9B or 9C, which are the "infinite legroom" seats. If you don't have status and can't book those seats ahead, try at check-in or at the gate counter. Otherwise, go for an "A" seat near the front to be first off. If you are tall, try a "B" seat near the front and unlatch the aisle-side armrest. Rotating it up and out of the way allows you to more easily extend at least one leg along the aisle. "A" seats do not unlatch.
There are NO "economy plus seats" on the EMB and any seat in row 11 will seriously suck - regardless of which version of the aircraft you are on. Also, despite the designation as an exit row, row 6 does not offer any extra leg room.