Customize Subscription Pricing Text

Hello Squarespace Community! 

I'm working on a site for a client who needs to be able to accept 2 payments from her customers - an initial deposit up front and then a final payment 4 months later. 
I'm wondering if anyone may have any ideas for how I can update the pricing text that displays to the customer? 

The default text is:

"from 1,085.00 every 4 months for 8 months" 

which I find a bit confusing for her purposes. 

Ideally, I'd like to change the Subscription Pricing Text to the following: 

"2 payments of $xx. Your final payment will be charged 4 months from now." 

Would be so grateful for any support or suggestions you may have for me! 

- Erin