Yeah, I'd keep them.. since they're obviously Puget Sound Waters... LOL...
I keep them as I might be able to use them later. Maybe not as the "Hot Shot" but a background, website? thumbnail photos, and I use them for colors for a background... you just never know 2 years from now what you might be able to do with them.
As just noted above, you never know what can be done with PS later on.. and as skills and software develop including your interests, might be you can Paint them in Oil or watercolors etc... so I'd keep them.
Just get a external 250gig storage and put them on that...
I only NOW am deleted the out of focused, black (still able to recover really-really dark ones using levels) but keep everything else..
so I'd hang onto them...