What weapons are you using with your IDS?
That is the bad thing about the HB kits, no real RAF specific weapons other than the ALARMs. Probably the main reason I have not bought one - well that and unemployment...
For free fallweapons from the RSAF - would they have been British or US in origin, other than the JP-233? I'm thinking BL755 and 1000lb vs Rockeye and Mk 83s. IIRC the kit does come with a quartet of Mk 83 1000lb iron bombs - with ballute retard fins.