It is very enjoyable playing on the TR09 and TB03 together and as you say the programming is very easy, the SH01 could almost definitely go.
Maybe I should actually strip out what I don't use in the rack and see if I miss anything.

Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.

https://youtube.com/@wishbonebrewery