My wife and I like 2F/G on the 763ER. No such thing as J & K seats on the 763ER, at least that I've ever seen. F & G in Rows 2-5 have a bit more pitch than on the A/B side or the middle seats C & E. Some like bulkhead--and I can see their point about no one reclining into your space-- but we don't find it that bad and like not having to put everything up on take-off and landing.

I'd check on that J and K in terms of the plane you are on.