Trying to install Zen Cart 1.5.5f on a new CentOS server with PHP 7.1 and MySQL 5.7

Keep getting these errors:
Main /includes/configure.php file does not exist (isn't readable) or is not writeable
Admin /admin/includes/configure.php does not exist (isn't readable) or is not writeable
/var/www/poolsupplyzen/logs folder is not writeable
/var/www/poolsupplyzen/cache folder is not writeable

I have checked them and made sure everything was writeable and had the correct permissions. Any inputs on fixing this and going to next step?

http://poolsupply.idealwebhost.net/zc_install/index.php

Thank you