HELP: should i go to his house??!! if yes what should I wear?!?!!?

So basically i had a crush on a guy for a year and i finally told him( we never saw each other, he is a friend of my friend). After that, he told me that we should go out and stuff and he planed a day but i canceled it since i had a exam( im in grade 10-- his in first year of university) anyhow, so we decided to plan another day so he was like where should we meet and i told him i dont care! SO he said you should come to my house and we should get high!!!!!!!!!!!!!!!! im not sure if i should say yes to him!!!!!!!!!!!!! should i goo???!?! isnt that awkward considering its the first time we want to meet!!! and if you are saying you should go what should i wear?! im planning to wear a black shirt with black or blue jeans! what do you think?!?!