umm well i hope you dont think the EDFC will let you raise and lower the ride height cause it doesnt. only adjusts the damper force. thats actually the same setup i was lookin at as well, id say if you got the money, go for it. tein is a very reputable company
compared to air suspension though, you will get a better ride by being able to adjust the dampening force from the EDFC in the car, but you wont be able to change the ride height with the push of a button. ur gonna have to jack the car up, take off the wheel, and adjust the coilover. but in my opinion the celica just doesnt look good on bags, coilovers is what you want and what the celica will perform best on