Here's how much deflection we get with no additional strips and only two sides on (no back). This is already acceptable considering that I'm not as wide as the telly and I'm sitting in the middle rather than spreading the load the whole width of the shelf; the telly's 22kg lighter also, so there would be pretty much no sag at all. Nonetheless I'm still gonna add some 2cm thick strips below this shelf for extra stability when the cats jump on top of it.
Doing a test fit before I sand and finish, brought the stand outta the workshop upstairs to the telly 'cause I thought since the stand is lighter, it'd make more sense than taking the telly downstairs.
Aye the stand's lighter all right but damn is it awkward to move around