Greetings and welcome.
For lighting, any major online jeep parts store has the lighting you are looking for. Google any one of these: Summit Racing, Auto Everything, Just 4 jeeps and 4wd just to name a few. All of the customer service people are excellent. I have aftermarket HID on mine with a HI-output blast (forgot the name) need to run with the internal HI-speed CanBus of the JGC. You should not have a problem.
With regards to tires, as member AAAA indicated prior, search the main WK2 Suspension/Brakes/Tires.... Thread for a great deal of commentary, suggestions and other goodies. By late August, early September, the treads start to come alive. In any event, by November or a couple of weeks before snow season hits you should have your tires on. This way the initial tire layer breaks in for the traction to start. Usually today, any where from 50 to 250 depending on the manufacture.
Good brands to search for is Nokian, Nitto, Cooper, GY, Bridgestone and some others. You will find in the treads other suggestions of tires to look for. Have fun.
Best for now.
Laredo X, Trail Rated, QTii, Sele-Terrian, Quadra Lift, Off-Road Adventure Package ii, Nokian Rotiva AT, Tow, AFE CAI, DiabloSport inTune 1000-DCX, Custom Sound System ( HAT speakers, JLAudio , Pioneer , JBL MS-8 & RF 3.sixty.3 -- see the writeup link below for more details)