Can I rename the perch folder?

You can rename the Perch folder so that the admin user goes to /admin or something else when logging into Perch. If you've already got Perch installed, rename the folder and then edit your config.php file (in /perch/config/) and change the line that reads:

define('PERCH_LOGINPATH', '/perch');

If you'd renamed your folder to 'admin', you'd change this line to:

define('PERCH_LOGINPATH', '/admin');

And you're done.

If you've not already installed Perch, rename the folder first (e.g. to 'admin'), then go to /admin/setup in your browser and under Install Location, set the folder name to:

/admin