May as well go for the VCAP4-DCD ey ... even though I didn't want to

The design exams never really interested me and one of my end goals was to get the VCAP4-DCA .. Now we got the requirement to send someone to the Design Workshop and since I have multiple VCPs it was clear who they will send eventually.
Now I thought - "while I am at it" I may as well shoot for the DCD ... are there, apart from the obvious PDFs on vmware.com, more books which may help ?
I thought about
Amazon.com: VMware vSphere Design (9780470922026): Forbes Guthrie, Scott Lowe, Maish Saidel-Keesing: Books
and
Amazon.com: VMware vSphere 4.1 HA and DRS Technical deepdive (Volume 1) (9781456301446): Duncan Epping, Frank Denneman: Books
I am sure they are a good resources none the less, but I really want to have specifics at the moment because I don't want to spend too much time studying for it
Now I thought - "while I am at it" I may as well shoot for the DCD ... are there, apart from the obvious PDFs on vmware.com, more books which may help ?
I thought about
Amazon.com: VMware vSphere Design (9780470922026): Forbes Guthrie, Scott Lowe, Maish Saidel-Keesing: Books
and
Amazon.com: VMware vSphere 4.1 HA and DRS Technical deepdive (Volume 1) (9781456301446): Duncan Epping, Frank Denneman: Books
I am sure they are a good resources none the less, but I really want to have specifics at the moment because I don't want to spend too much time studying for it

My own knowledge base made public: http://open902.com 

Comments
Recent: 11/2019 - RHCSA (RHEL 7); 2/2019 - Updated VCP to 6.5 (just a few days before VMware discontinued the re-cert policy...)
Working on: RHCE/Ansible
Future: Probably continued Red Hat Immersion, Possibly VCAP Design, or maybe a completely different path. Depends on job demands...
VMware Certified Advanced Professional 5 – Data Center Administration (VCAP5-DCA) (Passed)
VMware Certified Advanced Professional 5 – Data Center Design (VCAP5-DCD)
I had a quick look at the design exam demo (some flash jobby) and it does seem to be quite interesting. Only thing I am a bit scarred of are the 100+ questions especially due to the fact that all you really got is the blue print and the exam isn't cheap. Challenging, that is for sure.
profile: linkedin.com/in/astorrs
Oh yea - did the VSP / VTSP ages ago, now going through that BS .. what a waste of time