Of course, it depends on the track condition, but I think that the front is too heavy. If you notice understerring while off power then use a lighter silicone in front diff. The combination 10K rear and 30K front has worked well in different conditions.
When you fill the diff with the oil, do not fill it up to the edge, but leave some space for the other gear, which is on the other half of the diff.
Testing on the track is the only proof for your choices.
You definitely need to get familiar with the procedure, because if you race with the car then you will need many times to change the diff oil, while you are on track. Next time will be easier.