The time you took to answer the archinstall questions and what would take to do them manually is (nearly) the same. The manual way is that you are forced learn the system (which does take time), and it’s thus more exact of what you want. Once you successfully boot a manual install on a bare hardware, you’ll get all the swag. ;)

(I was lazy last time I had to do a full install, and I prepared the system almost entirely in a VM, for which I used the physical disk I would finally boot it from. The final step was to chroot’d into the nearly complete system and make it boot outside of the VM…)