Welcome, lots of good info here, don't forget to reference Club Lexus as well.
Metal tech is a good source for some of what you want, sliders, rear coil conv etc..
Bilstein 5100 all around, front can adjust on 1st or second notch depending on how high, I used first notch adn got approx 7/8 " increase which is all I wanted, no lift in rear
Let me know what you go with in rear, I used 5100 in front on second setting, (1" lift) want stock height in rear and not sure which 4runner coils to use