I run my live axle car with 0° toe - i.e. parallel. This gives a nice neutral feel and it doesn't tram line.
As for rake - yes it does effect the handling of a LA car - it really caught me out a while ago - have a look here. The 'standard' for a live car is, I believe, 15mm. When I had my car set to this, it was trying to kill me in any nearby hedge, so this was lowered and I am currently running 5mm, which is great.
I have pretty much decided that all 'standard' setting should be treated as a starting point and you adjust your car until it feels right to you. More rake will give more oversteer, less will give you understeer, but in the middle is a point where it is neutral, but it might not provide the highest level of actual grip, but if you can make use of more of the grip it is actually quicker.
Depends what you like really.
That's my view anyway
Phil Waters