Thanks to all for the advice - especially
Smirny and
expatboy - booked 2xF last night for BA199 to BOM, connecting to the 9W flight at 14.35 to Goa. Only ever having done point-to-point to BOM before I reckon 3hrs should be enough for the schlep from T2 to T1.
Given the good reports re Jet's J product I can see a 9W dom J vs CE trip report coming on!
Back on the day flight the following Tues.
Now to find somewhere opulent to stay...
Malarone, anyone?