To ease up crowding of a crossover up against a curve, instead of two #4or #6 regular switches,
Consider using something like an 072" Ross switch as the last piece of curve track and feed the tangent side into a number switch.
Or a curved switch coming out of a curve to feed a number switch.
Or two curved switches to accomplish the crossover totally within the curves of both circles.
Or a pair of 072, a right and left or opposite with the tangent feeding the curve.
Curved switches can be a real track plan life saver.
In either event it can be easier to start the installation by setting the switches in place and configuring the curves according to the position that the turnouts would provide without fudging.