I did that on my new Windows laptop. Very similar specs to your MacBook Pro (mine's a Lenovo ThinkPad P17 with a 4k display). I bought a Samsung X5 2TB Thunderbolt 3 SSD (a little under $600) for my sample libraries. I also did a full install of BiaB to it. Works great. I also bought two 2TB Samsung T7 USB 3.2 SSDs (under $300 each), one for work files (like the BiaB and Studio One 'Songs' folders) and the other for backup and installers (stuff I can afford to disconnect if I need the port).


ThinkPad i9 32GB RAM 7TB SSD; Win11 Pro; RME Fireface UCX II; BiaB 2025 Ultra
Bitwig Studio 5; Studio One Pro 7; Melodyne Studio 5; Acoustica Premium 7
Gig Performer 5; NI S61 MK3; Focal Shape 65; Beyerdynamic DT 880 & 770