SuiteCommerce Extension needs properties in its configuration json file longer than 300 characters

I am using SuiteCommerce Standard.

Due to great difficulty in finding out how to customize the behavior of our SuiteCommerce web site in the proper way, I've resorted to building an extension that runs client-side javascript on every page, to handle everything from displaying unit-of-measure conversions on each item in the shopping cart, to calculating freight costs before the user places their order, based on the shipping address they select, change, or create.

But since this extension relies on injecting client-side javascript onto every page (whether it's shopping, myaccount, or checkout), and because I needed to be able to iterate on changes to that code quickly, I am concatenating all that javascript from Configuration fields in the extension's Configuration json file.