Will Longtubes help or hurt me???

[SCOTTLT79]

hey guys,
I know you are sick of me asking questions about exhaust but i'm spending a lot of money and it is a big decision.

So, i'm going with BBK polished ceramic headers, BBK off road Hpipe, and magnaflow cat back.

Now the big question is, what tubes to get.
I know a little about the shorties but nothing about the long tubes. I would say within two years, I'll put a supercharger under the hood of that baby but not for a little while. I don't know what applications the long tubes will help and what ones they will hurt.

I tried doing a seach on here but everything was so vague that I had to ask here, sorry guys.

Thanks for any help you can give me
Scott