Fence Post & Retaining Rod

I need to get a CAD model of fence post produced.
The post is a commonly used metal "Y" post, made from galvanised steel. Like a Y, it has 3 arms.
Thickness of each arm is 4mm throughout its length. All 3 arms extend 40mm from the centre.
Height of post is 1800mm, tapering over the lowest 100mm to a point where each arm extends 5mm from the centre.
2 arms are plain. The third holds wire mesh and has 11 identical grooves cut into it which are 15mm long angled at 45 degrees to the vertical set at 100 mm intervals. There is also a larger vertical groove in the centre of the upper part of the arm and there are also 5 circular holes with a diameter of 4mm.

The rod is 1000mm along its long axis and has a flanged end set at 90 degrees with a distance of 5mm between the right angle and the flange. At the other end, there is another right angle bend (in the same plane as the flanged end. This end is threaded and has a length of 15mm.

I have annoated pdfs showing 2D plans of the post and rod. I have had sophisticated 3D models produced in the past and have made working models (without the taper) for my own purposes. This should take a moderately competent CAD designer about 30 minutes but I will allow an hour. I use FreeCAD so would like files that I can open natively or import so that I can view the post from any angle and show it with and without the rod.