YMMV and all the standard disclaimers.

The command module went together just as TVM showed.  Those RCS
nozzles are TINY.  A hemostat (careful, not too much pressure) helped
to push the nozzles into their slots.  One more place where the video
instructions were invaluable.  Without them I'd probably have cut off
parts of the nozzles during removal from the sprue...

The escape tower can be glued in place on the CM, or simply mounted
then removed for flight.  I opted for glue.

Minor change:  I glued the tower assembly onto the CM first, *then*
added the escape rocket tube and its nose cone.  Reason:  I didn't get
the ends of the tower cut perfectly square and even, so the tower
wasn't perfectly vertical on the CM.  That slight angle would have
been magnified by the escape rocket.  So after gluing on the tower and
fitting the ER, I tilted the ER a little to make it vertical, then
added CA to glue it in place.

For transport, pull out the LEM adapter and store the Apollo capsule
inside the 3rd stage.

If I get another Saturn V and do it as a Skylab, the Apollo capsule
and the SM tubing should make a pretty nice Little Joe II.

Nothing much left but paint, now.

Miscellany:
A piece of thick polyethylene sheet placed strategically over a seam
will allow parts that have CA glue on them to be held down with the
thumbs, whilst keeping the thumbs from becoming part of the rocket. 
(You guys what use CA all the time probably know this already, but
this is the first time I've used CA on a rocket.)

The bottom cardboard disk of the nozzle assembly tended to bow inward
significantly after painting.  That made the nozzles angle in toward
the center noticeably.  Were I to do it over, I'd either (a) make four
new gussets that fit the whole way across the disk, to hold it flat,
or (b) saw and drill a whole new bottom disk out of 1/8" plywood, and
sand about 1/16" length off the coupler ring before assembly, so the
nozzle assembly wouldn't be too long.

A 38mm motor mount would have been a good idea.  I'd like to see this
fly on an H112J, just fer fun.  How about a five-motor cluster, maybe
E15's?

While on the subject of high power, I'd have cut another main
centering ring for the motor mount, right smack dab in the middle of
the other two.  While removing the too-tight nozzle assembly (MY fault
entirely for making it too tight), I squeezed the airframe a little
too much in my hands, and gave it a very slight kink.  If I'd put in
another centering ring, it might not have happened.  OTOH if I hadn't
made the nozzle assembly too tight it wouldn't have happened either...

Pre-curling shrouds:  if I just curl them in my hands I tend to crease
them.  Pull them over the rounded edge of a desk or board, they curve
more smoothly.

I stand that baby on the desk and it almost touches the ceiling.  I
smile every time I look at it.  She is beautiful.

P'rfesser