G'day and welcome to the forums.
That's a lovely image to introduce yourself with, and regardless of the brand it's all about the image. You've got some good lenses to work with, so hopefully getting into the swing of things with the K-1 will be relatively painless. There's plenty of people around here shooting dual systems too, so there should be plenty of threads that your experiences will be helpful with as well as shared points of view.
To try and answer your questions:
1:- When bracketing exposures and using the timer is there a way to change to 2 seconds instead of 12? Refer to page 59 of the instructions, select the bracketing self timer mode then press info to gain access to the 12s or 2s timer.
2:- When using live view and displaying the electronic level on the screen is there a way to remove it without having to press the info button twice and deselecting it? Not sure why you'd bother doing this, the electronic level is displayed when using both the viewfinder and live view, so using the larger electronic level on the back screen is not normally needed. Both can be turned on and off via the menus, go to camera icon, page 5 for 'Viewfinder Overlay' and 'Live View'. Select these and you will see the options for turning the electronic level on/off. Other than that, the only way I've swapped screens is the multi-press of the info button. If there's a quicker way then we'll both find out at the same time if there is one.
Hooroo mate,
Tas