Okay.. So I inquired a lot on this, and finally I've ordered Violet output and input.
I dont want to make any dead spots in my tank and since it would be a densely planted one, water circulation must be good.
If i'd have going with nature or iwagumi, poppy would be a good choice. Or If I would've going with 2217 then also Poppy could have been a good option. But with 2215 and that too in a dense planted tank, I chose violet