I used to eat shrooms every year. They grow in the fields near my city, so every autumn me and my friends used to take a trip and harvest as much as we could. Best times ever.
Important thing about mushrooms is that shrooms harvested in different locations can have a different effects. I don't know how to put this. It's like a lottery. sometime you can get a really nice magic trip, sometimes it could be scary.
So my advice would be - take 10 shrooms first to check out the batch. If you'll like the result, then next time take more - 20-30.
10 shrooms will enhance your perception and intelligence, but you still will be able to act normally and control your actions. 20-30 shrooms will send you to Wonderand. So plan your trip! it's very important to be in a place you really like. My best trips were when I was outdoors. So find a beautiful place somewhere in the park or forest, then take your shrooms. Next important thing is music - make a playlist of songs you really like. The more atmospheric music the better.
Shrooms are very good with mdma. in fact it's better to have some MDMA with you in case if you start having bad trip on shrooms. just take a little bit MDMA and it will pull you out. Don't do much. Just build it up in your system until you feel just right.
Good luck and have a great trip!