I’d rather just jump E.Europe with everything I can (less tanks) and use the Tranny/Sub in baltic.
Once you have E.Euro you cut off Germany and Italy from attacking Karelia and if you have 8 inf, 2 arm, 2 fgt there, the last remnants of the Eastern Front won’t be taking Karelia, at least not on T1.
Also, I like to leave Finland/Norway for the US. After Germany falls it’s going to be left up to the US to take Japan, since they have the most convenient IC for the job. (I also like to leave Algeria and Libya for the US as well, it makes up for the 4 lost in Asia.)
Then again, I tend to give as much to my allies as I can as Russia so they can help out easier. After all, the sooner the USA is dumping 12-20 infantry in Finland and the UK is dumping 6-10, the sooner you can turn your red army on mainland Asia.