Sounds pretty good to me.
I was thinking of doing some surgery on a few Empress Late War Scots in windproofs.
Your idea sound easier.
Do up a few sections with EM-2s. And have the rest armed with regular 303. And stens.
And if that workes, i would then do up a few resistance figs with them.
Hell one of those new crew served MGs from the video might be a good replacement for the Vickers still in use.