Invitation question

so I was going to order invitations online but then realized it was going to be 450 for invites. Being that we are slowy going over budget, I decided to go to AC Moore and buy the boxed invitation kits. My only issue is that it came with the invite cards and a seperate blank card for RSVP's. My problem is that I am having my reception at a different place so technically I need a reception card. THe only thing is I dont wanna buy more boxes just so I have enough of the smaller cards to use for RSVP and reception cards. Is it completely tacky to put the church info and reception info on the main invitation? If I have to I will just buy the extra boxes but I'd rather not spend the extra money
.....what do you ladies think?

joann.com was having a big sale on a lot of items, including wedding stationery - you could check them out if you want more blank cards for less $$ and they also have pre-printed RSVP cards that weren't too expensive

i don't think it's tacky to put it all on the invite, but i don't think it will all fit unless you smoosh your font and then it looses the oomph