Lower it. I say 1.4in in the front and 1 in the rear gives it that sportier low profile type look, which the e30s should have had from the plant.
A little costly but aquire some rear seats with headrests, really adds a more modern and balanced look to the e30.
I can't remember nor tell if you have all disc brakes, if not that would be a great thing to do for complementing those rims. Rims and drums don't mix, IMHO.
Other than the above your car looks great, especially with the spoiler and DTM...
Mad E30 lover