I love supercinnies so id say my first choice would be any 2 gene snake with some cinny. Like a pewter but you already have a pastel so you have the potential to get pewters from that. What about a cinnapin or a cinny lesser/cinny mojo.
Mixing the BEL complex in would be sweet. And i love the look of cinnapins also. Ultimately its up to you and what direction you wanna go.