Laravel Cashier Charge Method In 4.2

Hi,

I have an old 4.2 Project i am working on and i am required to make a one of stripe payment.

I am aware you can do this in Laravel 5 using the charge() method.

If i composer require the latest "laravel/cashier": "~5.0" (For Stripe SDK ~2.0, and Stripe APIs on 2015-02-18 version and later) version.

Will this cause any conflicts, or will i be allowed to use the charge() method in a laravel 4.2 project. I just read the user still has to have a subscription plan to make one of payments is this correct? My payment system does not require subscription. Is this still appropriate to use?

http://laravel.com/docs/5.0/billing