To place 2 caps in parallel would it be ok to
Option 1 : solder one cap in place of the burnt out one (so directly to the board, through-hole) and solder the legs of the 2nd cap to the legs of the first?
Or would it be better to
Option 2 : solder the 2nd on the solder side of the board, there is enough clearance behind the board though will need to be laid flat to the board with a piece of insulating tape between the cap and PCB.
Personally I think option 2, will look more professional too!
Hope this makes sense.