Another vote for Tailscale. I can be on my home network while away from home. I have no idea how it actually works, it seems like magic to me and I love it.

That's half a size smaller if I'm reading your post right. Probably okay if they're open-toed. The higher the heel the more your toes gets squeezed. Are you planning on wearing the shoes all day or for an evening/event only? What's the return policy where you're buying them?