All data entered in to Google sheets becomes property of Google. Cross referencing the data in your sheets with the data it collects from its other various spy programs is probably trivial for Google.
You're just skipping the app and handing it directly to the ad company.
Thanks for including transgender as an option but users should be able to choose both male/female/non-binary and transgender/cisgender. I identified myself as transgender in the survey but I would have preferred to ID as transgender woman.
Do a simple app in each one and see which one you like best. Something like a todo API or something like ls, cat, or grep. Doesn't have to be perfect or anything just enough for you to get a feel for the language. Preferably something with dependencies outside the stdlib since managing dependancies is something you'll have to do anyway so you may as well see how it is before you get a bunch of them.
k8s is ready. If your company is just starting up it's probably not ready for k8s.
Unless you're a PaaS company with a large SRE or Ops team off the bat you likely own't have the resources to maintain a k8s cluster. It's a great piece of tech but it's quite complex and has a decent amount of overhead. So unless you happen to have an expert already on your team or your already have a bunch of services it's probably not worth the effort.
You're just skipping the app and handing it directly to the ad company.