Making a picture slide-show in Premiere Pro
For a slide show in Premiere the only recomendation that I have is that you set in Preferences > General > 'Still image default duration' to the amount of time that you want a image to appear, so you don't need to adjust after you drop them on time line. 

Set the 'Video Transition Default Duration' to an appropriate time is also helpful.

And to finish, don't forget that Control + d (or Command + d on OSX) can be used to apply the default transition to the selected clip or image.