I'm 6'4" - with relatively long legs and it is very tight - your knees will certainly 'touch' the seat pocket in front. Even if you get free seats next to you don't think that is comfortable either since the seats are narrow with thin cushions. If you have myopia that's fine since if the seat in front is reclined that screen is barely 6" from your eyes - in fact, so uncomfortable that I usually have to turn it off.

However, unless you're really masochistic, check out any WT+ upgrade deals - you won't regret it!