superk, the front and rear droop settings that you have are actually ideal for a car equipped with a front one way. A front one way usually has lots of on power and off power steering. So putting a front solid axle will definitely reduce your off power steering... which in your case I find it unusual that you compain that you have too much off power steering. Try any of this suggestions one by one to achieve a good setup;
For the front, I would first try to increase the caster angle by putting bigger caster clips in the front of the arm. Maybe take the the 4 mm one and put in in the front arms instead of the 2 mm one. Slowly increase till you get a nice balance. Putting more caster blocks (increasing the caster angle) will reduce off power but will increase on power steering. Secondly, try stiffening the front sway bar (90 degrees maybe?). Thirdly, you could try harder dampening by clicking up the shocks to 2 holes or 1 hole. Fourth, you may want to try harder front tires like 42 or 45 shore.
For the rear, I would suggest you change the orange springs to the stock yellow. Stiffer rear spring will aid in the on power steering out of the corners. You would probably loose rear traction. I would suggest more negative camber in the rear like -3 or -4. If you find the rear end still lacking traction and swings out when you take corners, use more toe in (3 maybe). If still a problem, try clicking down on the shock holes from 3 to 4 to make the dampening softer. Else you could also try to loose the rear shock tower and mount the rear shocks on the rear bulkheads to make the rear shocks more horizontal. You may also want to try and lock the rear diff a little. A tigher rear diff will make it more difficult to enter the corner (reduce the off power steering) and easier to punch out of the corner (increase on power steering).
If you're still getting too much off power steering (which I doubt after the changes above), decrease the rear droop from +7 to +8 or +9. If at the same time you need more on power steering (which I also doubt after the changes above) increase the front droop from 0 to -1 or -2.
For the solid front axle, usually if other setups are balanced, you would end up with something like +6 or +5 droop for the rear to increase off power steering and 0 or +1 for the front droop because with a front solid axle, you can get enough on power steering like the one way front diff.
Let me know if you run out of suggestions to do on your car