73' B3 340 Duster pro touring build

heres a couple shots of the lower control arms reinforced, rebuilt and painted...got the one tub fully (I mean fully) welded in, and started fitting the quarter panel. next I'll mount the door and make sure everything lines up... I also cut out the passenger side ready for round two of tub install. The last photo I decided to make a cardboard cut out of a 29" tire with a 15" wheel (inner circle) and a 18" wheel (outer circle) to get a feel for the stance definatley leaning toward the 18".

QUESTION: Is 3 1/2" of suspension enough for a street car cause thats what I have for axle to frame and tire to tub clearance sitting the way it is in the photo....I will have a coil over triangulated 4 link so I should be able to fine tune it.