Donchian Channel EA Needed

I need an EA that will:

1) Buy when price breaks/contacts bottom of Donchian channel and close when price hits the top of the channel (or comes within a number of pips that can be determined by me).

2) Sell when price breaks/contacts top of Donchian channel and close when price hits the bottom of the channel (or comes within a number of pips that can be determined by me). 

3) Allow me to select the Donchian channel period. 

4) Impose the smallest possible stop loss for all trades.  

5) Trailing the stop loss after a certain pip threshold is reached. This threshold can be determined by me.

6) Proportional lot size allocation.

7) Would like to be able to test 

8) Option to take the reverse order entries above, eg item 1) above Buy change to Sell when price breaks/contacts bottom of Donchian channel and close when price hits the top of the channel (or comes within a number of pips that can be determined by me) and vice versa for item 2) the Sell change to Buy when price breaks/contacts top of Donchian channel and close when price hits the bottom of the channel (or comes within a number of pips that can be determined by me).