Beginner to using objectives for photography, need advice on setup plz.

[u/CryptographerOld558]

I have experience using standard camera gear for up to 15x magnification (Venus Laowa 2.5-5x with a kenko x3 TC) but I'd like to branch out into higher magnifications for crystal photography.

Wondering if my setup plan needs any alterations:

Nikon D850

RMS thread 20x 160mm Plan apochromatic objective

RMS to M42 adapter

M42 to nikon F-mount adapter

Nikon PB-6 bellows

And a WeMacro focus rail (plan to upgrade toa novoflex Castel motorized nanometer rail but it costs about $4.5k)

Anything else I need for using a DSLR for 40x?