Help me set proper directory and URL settings

Hi, im trying to modify the output of Kalins PDF Creation Plugin. Heres the current code I wanted to edit:

$uploads = wp_upload_dir();
define("KALINS_PDF_DIR", $uploads['basedir'] .'/kalins-pdf/');//base location of PDF files
define("KALINS_PDF_SINGLES_DIR", KALINS_PDF_DIR .'singles/');//location to save individual page/post PDF files
define("KALINS_PDF_URL", $uploads['baseurl'] .'/kalins-pdf/');//the url string will be different from the directory so be careful
define("KALINS_PDF_SINGLES_URL", KALINS_PDF_URL .'singles/');

/*
define("KALINS_PDF_DIR", $_SERVER['DOCUMENT_ROOT'] .'/pdf/');//base location of PDF files
define("KALINS_PDF_SINGLES_DIR", KALINS_PDF_DIR);//location to save individual page/post PDF files

define("KALINS_PDF_URL", "https://" .$_SERVER['HTTP_HOST'] .'/pdf/');
define("KALINS_PDF_SINGLES_URL", KALINS_PDF_URL);//this will put all PDFs in the same folder
*/

This setting saves the output file under
“/public_html/wp-content/uploads/kalins-pdf/singles/”

And displays a URL
“https://www.mysite.com/wp-content/plugins/kalins-pdf-creation-station/kalins_pdf_create.php?singlepost=id”

What I am trying to do is save the output file under
“/public_html/get-pdf” (the folder is created and chmod 777)

And I want to show relevant URL. Thanks in advance.