It will be busy at that time of year. The LGW Terraces are very nice, although the Chez Gerard at LGW North do a very nice eggs benedict at that time of day.
If you want to sit facing the same way I would go for the last two in the centre as they face onto the bulkhead and have unimpeded aisle access. Personally though I would suggest a side block of two. Enjoy your trip Antigua is a really beautiful island.......