Forum Question on Upgrading to 4.0.3 from 3.8.5
 

Hello,
I am about to upgrade my forum to 4.0.3PL1 from 3.8.5. Can you help me on these?

1. I want only Forum. No Blog, No CMS. Only Forum. How to do that? index.php should go to forum home.
2. What if I delete all the files and folders except "attachments" and upload all the files freshly and the go to /install/upgrade.php? Is it a good idea?

Thanks