Got news for you, big guy... every single J 1-2-1 product is going to have that issue, except for SQ J bulkhead.
I'm not 9 feet tall, but at this point in my life, I'm not spending an extra 3+ hours in transit (in a crappy Y/J product) so I can avoid the footwells on an otherwise excellent J product on the non-stop.
If it's that important, you're going to pony up for F, and if so, forget SQ R, just plan to be flex and do LH F.
Issue: Solved.