Charity website icon set

We are a London-based charity looking for someone to design icons for our new website.

Icons will be used to explain to people quickly what we have done and what challenges we face. For example, icons include education, family, clean water, sport, drugs, violence, slavery, etc.

There are approximately 30 icons in total and we would like something like this: https://www.iconfinder.com/iconsets/design-flat-icons-vol-2 - however, these need to be unique to us and our charity. We also need a customisable number icon where we can change the number and the background colour using Photoshop.

Please consider that the charity is not for profit, we therefore need the lowest possible price and cannot afford to make large investments. The site has been developed voluntarily by a local agency and looks very professional, we are therefore looking for someone who can match that level.

We will not accept offers above $150 and prioritise offers below $100 for all icons and work inclusive. Any icons are then owned outright by us and we permit them only for display in your portfolio but not for reuse.

For further discussion, please contact us, we are very keen to get this launched ASAP.