The cross member drop should work for ya Jo but I recommend using the stock cross member and modifying it to fit. Reason being, the Calmini cross member will have to sit pretty low to clear the pumpkin because it's straight while the stock cross member has an upward curve built into it. My kilby cross member was catching rocks & mud on the trail after I dropped it for the 2" diff drop. This annoyed me so soon after I pulled everything out and started over.

Just a thought, I've seen an article of someone modifying the stock cross member to fit the 1.5" diff drop without drop brackets. Then you won't lose any lower clearance