I am very familiar with CPO's (been there done that) and I would say you need to shoot for 2% to 3% per month starting out with never more than a 1% drawdown for any given month (and no consecutive losing months).
Assuming the average monthly return is (2+3)/2=2.5%, that is about 35% per year annual return.
Does any one know any CTA/CPO/HF manager who has 35% annually return and only have about 1% drop down in past said 5 years? I would like to know that. Thanks.