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so I went through the tradingview's free scripts section and found out, that
Donovan Wall is a real expert, especially for what I was looking for.
The heavy stuff in pinescript, loops and arrays.
So I contacted him and we discussed my matter. He is really pleasant and friendly.
His charges are more than equitable.
The result of his programming work was quite better than what I had in mind, my
script became an eye-candy. Due to clean annotations it is comprehensible even for less able scripters like me.
I fully recommend Donovan Wall and I'm already looking forward to have another project with him in the future.