Hi Amanda,
I'm sorry that no one has responded to your question yet. There's likely two reasons: (1) many of us are currently engaged in Wikimania'14 and (2) the timing of discussing a new subject recruitment request is tense due to an ongoing discussion about how external subject recruitment requests should be handled on-wiki.
Whatever conversation is happening about the current process, there is a common practice that I recommend following for running your research on Wikipedia. (1) document your research proposal on meta and (2) engage in a conversations with the Wikipedians about your study to make sure that you won't inadvertently cause. If you reach out to me and/or Dario, we will help as much as I can. You've been through this process before, otherwise, I'd give more specific instructions.
As for survey devices, I'd recommend that you use a service that allows you to have full control of the data. This is the best way to ensure that you can protect your survey participants' data. E.g. the WMF privacy policy prevents WMF staff from using external survey tools when surveying Wikipedia users because of these potential privacy implications. I am not a lawyer, but I assume that this policy would not necessarily apply to you and your work. If you do end up using an external service, you should explain the difference to your participants and make sure that they consent.
-Aaron