Make sure you take care of those molds, nothing more frustrating that getting a little lazy on your prep work and mucking up a section, happened at work recently on a very expensive hull mold. Even just letting them sit will cause things to decay.
If you're concerned and want to make these on and off for a while, I'd recommend pulling a "glass master", basically just a really beefed up part that you leave untrimmed to make future molds from if needed.
If you get bored, doing infused panels isn't too much more work from where you are already, and can be a solid 10-40% weight savings with largely identical strength.