Just passed 70-299 to give me my MCSA. Very tight run thing, 700 required to pass, 700 got

Not quite sure where to go next for my MCSE tho. I know a lot of people recommend 70-293 before 70-299 cus of the overlap in PKI but would this work in reverse as well

?
I'm planning on taking 70-298 as the design exam, so that obviously has parallels with 299 but I don't know if that's my best option for the next exam or not (not having any experience of the case study format).
I completed 70-290 and 70-291 back in September so they're reasonably fresh in my mind if not absolutly sparkling.
Any suggestions of where to head next?