Source is the Soviet Army Handbook with some interpretation/fitting by me.
I don't know what's the Duty/Equipment of the Scouting Squad, usually I'd suggest to make it some kind of light-ish Infantry squad without LMG, if anyone would know what they rly were supposed to do.
I also added +1 Support Man per Inf Squad to compensate the missing manpower by 9 Squad Men.
So my Suggestion would be to just reduce the Support Squad numbers from 20 to 8.
Note that this Ski Battalion is triplet to be a Brigade. The Ski Brigade TOEs seem weird.....or actually, wong with their 3 Support Elements, somewhat caused by tripling this Battalion. Ski Brigade TOE will be separate Thread.