Yea, it's really what you feel most comfortable with. If you aren't completely familiar with coding and code standards then DW might be the way to go. Just keep in mind that DW and any WYSIWYG will bloat your code and sometimes requires you to modify it anyway.
The most important thing in this site will be your accessibility issues. You are not going to want to use any plug-ins or use a lot, if any, scripts. Also, use a clean layout with larger fonts and minimal graphics.