htaccess Runway Upgrade

This is probably a stupid question but I don't have a great understand of regex nor the particular workings of Runway. I have upgraded from Perch to Runway. I had a simple .php rewrite in Perch and am wondering if it will have an effect to Runway...

<IfModule mod_rewrite.c>
RewriteEngine on

# Redirect to PHP if it exists.
# e.g. example.com/foo will display the contents of example.com/foo.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME}.php -f 
RewriteRule ^(.+)$ $1.php [L,QSA]

# Perch Runway
# RewriteEngine On
RewriteCond %{REQUEST_URI} !^/perch 
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* /perch/core/runway/start.php [L]

There is redundant code here, I am wonder what is the 'proper' way to order these. I have not converted my perch pages into Runway temple architecture and would rather not at this point. I would like my links to work without the .php extension like they currently do.

Many thanks!