Meh, I still think that buying a DA 14mm or DA 15mm or DA 12-24mm, FA 20-35mm, Sigma 10-20mm, Tamron 10-24mm, Samyang 10mm 14mm or 16mm, even the DA 21mm will give you much better photos than the kit lens, even if you stitch kit lens photos. The Pentax DA L kit lenses are not as bad as some other brand's kit lenses, but a prime or higher-end zoom will still be significantly better. The best use of kit lenses is for tourism snapshots and as a flexible WR workhorse. If you want the IQ, you probably want a more specialized lens.
And its true that even though usually people use wide angle (And UWA) lenses for landscape photography, you can take great landscape photos with normal and tele lenses. You know those landscapes with a giant moon near the horizon? Those are taken with a tele lens, sometimes over 500mm. But I still wouldn't recommend a 500mm lens to a beginner, at least not as a landscape lens. But of course, the result depends on how creative and skilled you are, and both of these take practice.
Welcome to photography, where lenses matter a lot, but you'll only know if its a good fit once you have it