Diversifying income is something every responsible non-profit should be doing, and that's what this is. If I were you I'd be more worried if we didn't do something like this.
The bulk of our support comes from corporate sponsorship, another component is grants, and the third is individual donations. Individual donations are likely always going to be our smallest source of revenue but it's still an important source to develop.
We'll be around. Go ahead with your rollout, I hope it goes smoothly and that it inspires you to contribute back what you can.