Like Jonathan, I've been using Dragon to dictate text into Studio for years. The good news is that the latest versions of Dragon are very accurate and require minimal text correction, but keep in mind that some correction will still be needed, and this cannot be done by voice, which leads to the bad news: Studio is one of Dragon's unsupported applications, which means that there are certain limitations. From Nuance: "When dictating with Dragon NaturallySpeaking 13 in a non-supported application, editing text with voice commands like "select line", "correct that" or "capitalize that" cannot be performed because Dragon does not know where the edits took place and therefore cannot maintain a correspondence between typed text and the dictated text." (http://nuance.custhelp.com/app/answers/detail/a_id/16513/session/L2F2LzEvdGltZS8xNDQ0ODMxMTY1L3NpZC9mUm1Nd1d5bQ%3D%3D).
Furthermore, when it comes to commands to control the program, it's just not possible, at least with the Premium version. Dragon simply doesn't include Studio's commands and therefore they cannot be used.
Here's a screenshot of Dragon's command browser. The commands for programs that can be controlled by voice are listed here.
I know the Pro version is more customizable and the user can add scripts and commands, although I don't know how much of that would work with Studio.
There's a new version that came out a few weeks ago that is also supposed to be more customizable but since it's not yet available in my language, I haven't had a chance to try it out.
Oh, and regarding the Dragon and AutoSuggest issue, SDL has taken care of this and it will no longer be an issue after the next Studio CU. : )