I'm slumming it down the back next month, but mixing it up a bit.
MAN-LHR-LAX, LAX-SFO-JFK, JFK-SFO, SFO-LAX, LAX-JFK-LHR-MAN

Planning on eating in the T3 lounges at LHR before an AA Y flight to LAX. Prefer AA westbound to be honest with plenty of Diet Dr. Pepper.
Then something in the Flagship lounge (and/or QF F lounge) at LAX before a SFO flight.
Got a flight to JFK next day, and will eat in the Flagship lounge there before the return flight to the west coast.
Another trip to the LAX lounges, and I've booked on BA metal on the JFK-LHR sector so I can hopefully have a last look at the CCR at JFK on the return.

Apart from the LHR-LAX flight at 10hrs or so, survivable 5-7hr flights for the most part. Not really planning on eating too much on board - will probably have 10 bottles of champagne, a crate or two of beer and 200 bags of crisps etc. in my bag from looting the lounges

Do like the chicken and mash type Y dishes. Better if roast potatoes though.
Don't bother with any desserts and pizza rolls aren't worth the effort.