Help: what tool to use

I want to sell 80% of my Ether between these 2 points ~$264 and ~$1340.

Let's say I have 10 ETH and want to split those 2 points up into 40 x .25ETH selling markers...Does TradingView have a tool that can do this for me, or do I need to muck around with Excel?

I'd like to set 40 sell orders, some now and the rest scaling all the way up to $1340

Cheers