Can a OneUP RadR Cage be used on Acera derailleur?

I've got a first gen RadR cage that I'm about to take off an old Zee M640 derailleur that used it to reach 42t in a 10 speed setup.

Would I be able to attach said cage to an Acera derailleur (M3000) to allow it to reach 42t? It's currently happy with 36t but realistically would be good if I could increase the range now I'm in the Peak District.

Otherwise do I have other cheap options to increase my range without having to change my shifters (105 5700 10 speed)?

I was thinking of trying this derailleur: https://sunrace.com/product/rdm900-md/ which has standard pull but can reach 51t. Would be great if anyone has used this derailleur or its 10 speed brother.

TIA.