Forgot to mention this trick from a while back that should (I haven't tested it) work, because you can have one button do a list of things (in this case just 2 things):
TrackButton GoPage Track
TrackButton Reaper 40454 // Screenset: Load window set #01
SendButton GoPage Sends
SendButton Reaper 40455 // Screenset: Load window set #02
EQButton GoPage EQ
EQButton Reaper 40456 // Screenset: Load window set #03
Can someone try this and see if it actually works ?