This is looking very good.
I will try a quick version tomorrow with T68-6 toroids (the smallest size I have handy) in the antenna circuit just to see how much attenuation I get. I am using the same circuit as yours and re-calculated the turns for the T68-6.
If that works I will order some small T30-6 toroids and do the same a you.
Please let me know the results when you wire yours up. I will keep you informed of my results.
All the best,
73, John (VK2ETA)