Two checkouts within same Checkout page - WP WooCommerce

I have a functioning payment checkout today called SVEA CHECKOUT (plugin) which covers Card, Invoice. The current setup is that when a customer goes to the cart to checkout, it takes the customet directly to the SVEA CHECKOUT (plugin) Now, I want to add another paynment method an INSTANT PAYMENT solution "SWISH" to my cart. This is what I expect; When in cart, customer should be able to choose SVEA Checkout for (Card, invovoice) payments or instant payment Swish. Once the customer has chosen the payment methods, the rest should go as it is by the checkout functionality. TASK: you have to make two PLUGINS work toether in the same checkout page. You need to do, perhaps 1. you as a developer need to crate a checkout page where you have both options available 2. customer has to chose one or the other 3. Items in the Cart should always be visible regardless of payment method chosen by the customer. Or you might have even better solution to provide. The implmentation should take place in our test environment first and then moved to production after succesfull testing. N.B: Stand with you bid, dont try to increase your bid when communicated.