Welcome to the IQ3 club! I just started mine 2 days ago!
As what comy stated, you will need a small fan to keep things cool. To deal with the evaporation, you can use a hamster bottle as an ATO (auto top-off) for freshwater replacement. Just remember to remove the metal ball from the metal tube, and insert a rubber or plastic tube as the contact point in case the metal portion rusts. Some links from Nano-reef.com to give you an idea how it works:
Hamster bottle ATO
Concept (This is an interesting read. This reefer conducted an experiment to find out if the freshwater and saltwater will eventually dilute and mix together. Check out the results.)
For such a pico, regular weekly water changes will suffice. You might wanna consider replacing the black sponge with Bio-homme as it will be a more effective bio filter. Live rocks are your natural bio filters as well, and they are easily available in most LFS. From what I read, Coral Farm sells good, cured live rocks so you can consider getting it from there.
Keep stocking levels to the minimum, and you should have a thriving pico in no time! Start a tank thread, and we'll look forward to your progress updates!