If you look at the pic of the seals, they have a soft spot, that you can bend to form the 90° bend.
Can't guarantee that this is how they will arrive though. I might have to confirm this with the seller.
If you don't mind using second hand, you could try to find a Kia wrecker near you, rip the door seals from a sportage 93-02 model and put them straight in. They are one continuous piece with the soft spot to bend to 90 already there.