Great progress man...
Honestly, the turbo looks tight but it also looks at home
Its hard to tell on the photos, but does it seem like you'll have any trouble with the downpipe clearing the actuators?
You can also dump the TID in front of the radiator if you dont mind a little cutting, etc. At least in there you may have more room for an air filter.
The CAS is simple, line up the marks on the pulles and line up the mark on the CAS body to the gear and you should be set. Provided you put the pulley on correctly