By the way as you asked how to improve your guide you may want to detail how to get the sources of the v0.16.1.0 version of bitcoinABC
I found the binaries at https://download.bitcoinabc.org/0.16.1/I wrote "sources"
and also "v0.16.1.0" according your instructions What I did (within a script) was:
git clone https://github.com/Bitcoin-ABC/bitcoin-abc.git
cd bitcoin-abc
TAG=v0.16.1
git checkout $TAG
git tag -v $TAG
git submodule init
git submodule update
It gave some errors, but overall it worked.
Please note I used "v0.16.1" instead of "v0.16.1.0" otherwise it didn't work at all.
Maybe the git experts here can suggest a better way to do it? Missing specific instructions for Bitcoin-ABC I used same script I use for Armory (just changed the TAG) but it appears the two repositories are setup differently...
I don't think there are submodules in ABC's repo. At least there are none in Core, so ABC would have had to had to add submodules recently. It won't do anything to initialized submodules on a repo that has none, but I'd rather people know that this step has no effect. That aside, this is a acceptable procedure. Note that you can verify a tag without checking it out. It's actually preferable to first verify the signature on the tag then to check it out than otherwise.