Speed, ie gut, reaction says go for 1, 3 and 4. I think these are the stongest and create the most emotive feelings for me as a viewer. 1, 3 and 5 might work better as a set. I am not so keen on the tyre swings. It just seems a bit ordinary/lacking in atmosphere, something the others have in abundance. I've done 2 exhibitions over the past 6 months so I empathise with your situation. I did pick images that I knew others had remarked on and that were also important to me as showing that I was developing a voice of my own so I had hit 2 criteria beyond just what I liked.