Hey guys, I have a question is it a good idea to have 3 different types of credit cards by the same credit card company?, the reason why im asking is because I have..

2 Capital One credit card (1) limit $301..(2) limit $500

1 Discover Card Limit $750

now the $301 card is the oldest 7 months and the $500 limit is 1 month and the $750 I didnt get my frist bill yet.

after I get the $500 limit at 6 months I want to close out the $301 Capital One card so that way I can open another Discover card with its same amount or higher. when the $750 gets at 6 mouths I want to close out the other Capital One card $500 limit and get another Discover card so that way ill have 3 Discover card on file...Discover card gave me more limit then Capital One

Any suggestions would be great,..I tried to describe the best i could