You need more aeration. People normally do 1/3 perlite or what ever it is they are using for aeration.
Where did you get the manure and compost bags? Are they brand name? Branded and commercial products are not the same as if you got some compost from your own pile and added manure.
The 1 block of spagnum- how many liters does that inflate to?
The sand- personally I say don't use it. It does provide a drainage to a soil mix but it has no CEC which coupled with no moisture retention makes it like a dead zone for microbes and fertilizer. There are far better alternatives to aerate and drain your soil.
As for the limestone, you'll have to look up the ratio of that to not go over the top.
You want more additives like different rock dusts, kelp, maybe some alf alfa meal etc.
Here are 2 links to 2 soil recipees that might help you get some perspective of what other people do and what you might incorporate into your mix:
https://www.rollitup.org/organics/636057-recycled-organic-living-soil-rols-2.html
https://www.rollitup.org/organics/636057-recycled-organic-living-soil-rols-19.html
(sorry you'll have to scroll and find them, but that's the pages they are on)