When I piloted code.org's CSP, I followed the sequence Baker outline (and as he mentioned, pretty much what you are outlining ) I believe changes were made due to feedback from teachers, but of course it's worth trying and your students may respond differently from others' experiences.
I found lumping the programming into one unit was too much programming for my students - they seemed to "burn out" or kinda "go numb" from it after a few weeks. I appreciated the newer sequence where they get a break and then get to dive in with renewed enthusiasm.
I also found it's a bit tough following programming with data. In general, my students have found the data unit not quite as "exciting" as programming.
I do agree though that U2Ch1 naturally follows U1Ch1 and would be a pretty seamless flow.
Overall, I'd say give it a shot, and you may have a better chance especially knowing the experience of other people who took that path.