For more on Autotext: Automated Boilerplate Using Microsoft Word

If you need to use Styles, you could use frames rather than textboxes. However, most shape effects are not available to frames. Borders and shading is about it.
Frames and Textboxes in Microsoft Word

I think you will be ahead of the game using AuitoText.
You might want to use Greg Maxey's Add-In to help you organize and use this.
Building Blocks & AutoText You could put your shapes into a separate gallery and put it on the QAT.