Ikea Faktum repurchase extraction question etc.

Hello,
we are planning an extension or partial remodeling of our existing kitchen (Faktum).
We have figured out most parts (carcasses, fronts).
Now a question about the full-extension drawers.
It should be a "normal" 60 cm base cabinet equipped as follows:
3x drawer (full extension)
1x full extension for large pull-out front (is that the right term?) with 31 cm front panel.
Which extensions (preferably soft-close) should I choose now?
I’m not quite clear on the H’s and I’s and so on.
Are there alternative extension suppliers that would fit?
I would prefer a relatively high back wall on the drawer (about 20 cm) but I can only find 13 cm high.
That’s it for this case so far.
Is there a way to save the shopping list online? So that you might take a look and see if anything is missing or perhaps even something is wrong?
Thanks already for your help,
Regards

Hello,

you can also use a Maximera drawer extension, but that means some DIY work.
I have never tried whether 3 drawers fit into 1 extension. It was never sold like that.

You won't have anything left of the RATIONELL drawers. The depths seem to be already sold out as RATIONELL B.

You can take a screenshot of the shopping cart.