Surface pro run macos on external drive?

Hello, I want to have macOS on my surface pro 2017 to do final cut pro etc but I don't want it on the device itself (128GB). Is it possible I could install it on an external hard drive and use another usb stick as the bootloader (I got a way for more USB slots) or is the fact that usb can only load fat32 create a limiting factor?

submitted by /u/Hardfg5000
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