[emhart]

Heh, if you want to go absolutely bonkers you could go with a lockitron/august/Haven on the interior, multi-point locking system in the door, an Abloy Protec 2 or EVVA MCS for your primary lock, and a Drumm Geminy Shield over that. (the Drumm shield is a lock to protect your lock.)

Remarkably, you could probably make it all happen for just north of 1k, or less if you are willing to do much of the labor yourself. Of course you'll have to wait for your smart lock to arrive, but you can rely on the mechanical locks in the meanwhile.

And any mechanical security enthusiast you invite over will be absolutely floored by your setup.