Landing page/click funnel

Description

I put together this landing page https://lyckowbackman.se/example-landing-page/
to show what I want to feature: 2 variants of my book2 consecutive order bump options
I want to "force" the buyer to pass the 2 bonus options on their way to check-out, and I want to get them there with as few clicks as possible.
I enclose a pic outlining the general idea and basic style sense (but am quite happy to have a nicer layout etc).
I want this whole thing done as back-end-idiot friendly as possible, so that I can use and reuse this page for other products and offers in the future (so no hardcoded specifics that I then cannot change).
At the moment I use WP and WooCommerce plugins, and am happy for other free WC plugins to be used. I'd prefer not to use elemontor or other "yet another" tools if possible.