going to look at invites on Thurs!

so my cousin offered to come help me go through the books at Party city for invites! She thinks im insane for spending alot of $$ on invites so shes going to help me get a bargin!

im kinda excited this makes things VERY REAL!!! Is it too soon to order?i feel like i am but then when i look around i feel behind! also for a June 13th wedding when should the RSVP date be for?