Longer offset shackles?

If air shocks raise your ride height they’re supporting weight that the shock mounts were never intended to carry. Air shocks are a band aid and pumping them up to raise the ride height will just destroy your shock mounts over time and result in lousy handling all the time.

Do it right and spend your money once on new springs. Or spend money on band aids, and then spend more money repairing the stuff the band aids will break in addition to spending the money to do it right later anyway.