Have managed to get Vole iso below 500mbs. It still includes uefi booting. Was thinking of switching too spectrwm, although smaller I though it was a step too far. Hope to get a new wallpaper created soon. Wired connections are automatic and wifi-menu is simply a case of running config-edit in a terminal (or sudo wifi-menu).
With your local server set up in /etc/pacman.d/mirrorlist you can install pretty much anything in archlinux repos. Install base-devel and you might be able to access AUR (untested).
Iso uploaded (19/09/19) please think about lending support with a donation all helps 😉