If you're trying to send that through your own printer, color shifting will occur. For an example, take your card stock and mark it with a colored sharpie, your teal will probably turn to a green. Your black will stay black (although you may want to use a "rich black" as if the inks are too transparent they'll have some orange popping through).
I'm with others in that you should probably look at just dumping some money to get it outsourced, they're very inexpensive, especially if you get set up with a trade dealer and start supplying them to your customers. Plus it has a more professional feel, as card stock is fairly noticeable. Offset printers will be able to produce a thousand full color front and back for less than you paid on a perforated card stock or for the time it takes you to trim down in my experience.