Good luck lacebylady, I've been fighting with this one for years! You'll find something that suits you. My 'running glasses' are an old, battered and twisted set with the smallest lenses I've ever owned. I can use them for the distance and because of the lenses size, can peak round the corners to read my watch. When I race, I use contacts but the watch if I wear it, is a blur. (unfortunately I am generally not!).
Good luck with the lunarglide 5. I've had 2's 3's and now the 5's. They are comfortable and light shoes but offer support as good, if not better than a lot of the clunkier rivals. The flywire with the knitted effect looks great but I have real issues though with the progression of the soles. They have poor grip on them even when they are in the box, which I would say is a little ropey for road running in the wet or ice. Mine rapidly deteriorated so that even at 200km I considered them 'worn'. Now they have reached 320km, I'm shopping for a new pair. Have noticed when pricing them up that they are also a bit more expensive than most of the other 'majors'. If I can get a good deal online then I may still go for them again. I'm hoping that I may get more out of a spring pair than ones used through this winter.
I have had various injuries down my left side for over a year including the top of my foot (just at the junction between foot and ankle). It now appears it is all related to my back, as a form of sciatica. I am getting on top of it now but I suggest you throttle back a bit, stretch loads and often. If it lingers, then don't be afraid to get a physio to have look at it.
I wouldn't get out half as much if it wasn't for my four legged running partner. Great start to the day to get three miles in together in the morning and it does get the walking business over and done with a wee bit quicker. He is still around for longer run in the evening or at the weekend and it didn't take long for me to get used to his stop/sniff strategy and for him to get used to my 'come to heal' demands. Enjoy your running!