Weekend - certainly not, the scope is massive. All those CLIs - gmail, whisper, elevenlabs, whatsapp/telegram/discord/etc, obsidian, generic skills marketplace etc, it's just so many separate APIs to build against.
But Peter just said in his TBPN interview that you can likely re-build all that in 1 month. Maybe you'd need to work 14h per day like he does, and running 10 codex sessions in parallel, using 4-6 OpenAI Pro subs.