Does it all need to be converted? I'm up to probably 20 TB or more and maybe convert 5% of my raw files. Many are similars and as a back-up or the nooks and crannies that fill in the gaps, but to convert and print every single photo would take a village... I'd do a tight edit of the best, convert and print at least small images and then buy three large hard drives, transfer the files and hand them each their own and let them worry about conversion and printing.