one of the tricks to keep space is, to put the filters in downside of the chassis,
they must not have case, only a little aluminium separation plate. Some filter coils can be wired on amidon toroids (not all).
The (hot..) audio stage will be flown upsid, behind the scaling.
I have planed in Corel, but its a fight for every space
But the switching area will look , like most tube radios, not so perfect, short wires and a lot of coils there
greetings
Martin