Product with multiple variables

-- url of the page with the problem -- : www.digitalguarddawg.com
-- HikaShop version -- : 3.0.1
-- Joomla version -- : 3.7.2
-- PHP version -- : 5.6
-- Browser(s) name and version -- : NA
-- Error-message(debug-mod must be tuned on) -- : None

The client is wanting to minimize customer interaction and has suggested a way to do so which I believe is impossible to achieve, but I said I would ask.

So he has Billet Buttons for his aftermarket push button start modules. Each button has 3 sizes, 3 colors, 2 trim ring colors, and 2 button types (on/off, and push on). So, we have 3x3x2x2 = 324 possible options.

Now I have no problem having Billet Buttons as the product, with the 4 options to choose. Simple. What the client wants (which, honestly, I think will just be confusing....) is for a client who wants 2 blue 19mm buttons, with black trim, and action A (on/off), but also wants 1 red 25mm, black trim, action A to be able to select BOTH buttons on one screen then add BOTH to the cart at the same time. I just don't see a way to do that other than select the first, add to cart, then select the second, add to cart. Am I missing something or do you agree with me?

Thanks.

Thanks for the reply Nicolas. It's actually easier than I thought, but, yes I agree, totally impractical. I've already warned the client that it probably either won't have a solution or will have an impractical one.

Cheers