Just need to add a payment option to a form

Hi.

I am simply trying to create a one-time workshop on my site, which has a few fields a user needs to fill out (see https://www.sheto.org/executivepresence) and in this form, I would like to be able to add an option for them to pay (via Stripe, my payment processor). 

It appears that there is no straightforward way to do this in Squarespace. From what I understand, in Squarespace, I need to add Stripe as my Payment processor; add a store page; add a product aka this workshop - which has limited formatting options; and then use a custom form at checkout. Doing all of this limits my page layout flexibility which I don't like. AND I run into cart abandonment - which I also don't like! Additionally, with just one workshop, I am not sure what to do on the "Store" page?!

Another option I can think of is to stick with the page I have (https://www.sheto.org/executivepresence) and in the form's post-submit action, redirect the user to  a hosted checkout page on stripe. But this makes it a two-step form submission - not ideal for what I want. 

Any suggestions how I can achieve what I want which is just to add ability to pay in the form here: https://www.sheto.org/executivepresence?

Thanks in advance for your help!

Nidhi