It may be ok for building whole new rig, cube as base, and then add all next based on cube possibilities - don’t buy weak monitor, but only one with audio in it, don’t buy extra ssd, buy sd card, solid usb hub or at least wireless kb/m (personally I like wires here)… unless some may have non compatibile monitor without audio, few ssd and many wired tools already.

Also doubt my full size mounted dvd and even hdd (aye, sata2 hdd!, magnetic discs!), would be so easily Woah just googled, we have usb to sata adapters, and not even that expensive (10-20€), still would need few, boosting total price.