As you know I am relatively new to this variety business, but for what it's worth I think I agree on both those.
F282 is Dies 7+G. Obverse 7 has the fourth leaf in the third lot down, which yours has. Reverse G has the door on the lighthouse, which yours does.
F321 is dies 11+J. Reverse - it can only be J or L and L has the H of Halfpenny much closer to the lighthouse. With reverse J it can only be obverse 11 or 13, and the rose is too indistinct (I think) to be 13. Most of the other distinguishing features are worn away so only a best guess.
... but feel free to correct me!