Hard luggage for 2002 Gen1

[Gibboian]

Im planning for a big two up trip next summer (Ireland) and as a result I need some luggage capacity. I tried soft panniers previously but they are too much effort getting on and off the bike and my wife cant get her feet on the pegs


I looked at some Givi systems but they say suitable for 03-05 bikes, mines a 2002.


What have people used? is there a "best buy" set up that will do the trick?  Im thinking top box and side cases.


thanks for any help