I guess it depends on your individual needs. If we were talking about any other airline with assigned seating, I'd also opt for the final boarding call and be the last one down the jetway so that nobody had to wait behind me while I hobble along. This is Southwest, though, and seats are first-come, first-served. If I boarded last, I'd be guaranteed stuck in a middle\center seat -- and in my case that's not merely squishy and uncomfortable, it's not actually physically possible. Because of the stiff brace, I can't bend my knee at all, so I have to sit in an aisle seat where it doesn't matter because I can arrange myself with my foot pointed out to the side and leg fully extended. In a middle or window seat there's nowhere for my foot to go. The space in front of the seats in coach class isn't big enough to fully extend my knee. So if there isn't an aisle seat available when I board, I have to speak with a flight attendant who then has to persuade somebody else to give up their seat so I can sit down. If I were the other passenger, I'd consider that much more of an annoyance than letting the disabled person board in front of me to begin with.