im also fully confused by your questions, maybe start from the very beginning and make references explicit^^
I have two accounts with VZ with tiny amounts in there, and both are moving to VIAC
from tax reasons it always makes sense to split up in 5 (the max). there is a tax plot in my 3a tutorial visualizing this. You can not however split existing accounts. so just make 5 from the start.
that is a fully legit well diversified portfolio. you can argue about the golld position in a long term portfolio, unless you want to do something with the funds “soon”.