In regards to the screenshot above, the 18-55mm is the everyday lens and is the safe option when out and about.
The WR means weather resistant, and if you go for the pentax, then you're need to pair the WR lens with the body....make sure when you get the camera, the lens is a WR as well. I've noticed a number a few retailers that sell a WR Camera like the above without the WR lens, which is very cheeky. But the options you've chosen above, are all good.
One thing is, do you believe you'll want to expand upon your collection of lens etc...will you become an enthusiast? if you're anything like me, when i start a hobby, i go 100% or nothing...it's terrible for my wallet.
If you think you'll want to build upon and maybe look at other lens etc...then with Pentax, the great thing is, you have a vast array of lens to choose from...because every lens built for Pentax K Mount which goes back to the 1960's I believe, will fit your camera...Which is amazing. BUT...there's a cost option, with Canon and Nikon...the amount of lens available and the prices are very favourable...also...with Canon and Nikon...because they can such a big market share...there are many other companies who make and sell lens for them at a very reasonable price....So it's worth thinking about how you wish your entry photography to pan out.