No, those aren't the stock lights. See my tails:
You can swap them out for 91 tails sometime if you like the look better.
What type of rims are you going to get? If you're looking for ones that don't weigh very much, be sure to check out rims from Rota. Keep your stock rims too. That 'saw blade' rim that came on the Prelude is less common than the other rims that look like dinner plates.
Piston rings aren't hard to do, once you get the piston out of the car. It's more than a one day project, but if you have the tools and the know-how, you'll be able to do it. All you really have to do is pop the head off, and then take the oil pan off the bottom of the engine and disconnect the connecting rods from the bottom of the engine. Then you just pull the cylinders out the top of the motor, fit new rings, and reassemble.