Start by looking at how you drive the car and where you feel it's shortfalls are.
If you're new to off-roading you will find the car very capable as it is and may be happy to keep it as is!
Start with things you need to enjoy your car more -
Cant get up hills? Locker(s).
Keep bottoming? Lift/Bigger tyres.
Don't like the colour? Paint.
Want to chat with mates when out wheeling? UHF Radio.
I only spend money to make improvements I am going to use.
Over here in Aus every man and his dog has 4wd utes dripping expensive gear - 2k driving lights, roof tents etc... And you can see they never see any offroad action.
So go use it, and tailor your build to suit the type of driving you enjoy.
Nice rig, enjoy it!