Are you basing the SA-N-7 installation on 1153 on a real project? The layout seems unlikely for mutual-interference reasons.
Yeah its based on the real model of that design in OTL (I'll post a drawing of it in the never-where section later today). The "tandem-arragment" is bit odd but interestingly enough the Kashin class destroyer Provonyi also featured similar tandem fit, tough in it only the foremost launcher was fitted (but the root of the other is clearly visible.). The same arragment is also shown in some drawings of Sovremennyi prototypes.
were the angled deck markings on the carriers retrofitted with an angled deck inspired by the markings on British carriers?
Yes, Bombheads drawings on british carriers were great inspiration for me while doing these.