Here's my advice.
Invest in QUALITY content
Invest in QUALITY gallery design/layout (arousaldesign.com)
Invest in WRITING YOUR TEXT
The rest is cheap... manual submissions by my company,
http://www.webmasterlabor.com is $3.50 for subs to over 150 to close to 200 TGPs.
See how this is broken up.... you invest in increasing your QUALITY and actually coming up with a promotions strategy for your gallery. You outsource the manual labor.