yes, 100% per annum
That's not even close to realistic.
10K starting capital and no leverage and you would still be the richest person in the world in 20 Years.
Trying to force a return on the market is **** about face anyway. You can't control the market - you can only position your self to benefit when the market is generous and survive when it's not.
You can work on your process and skills but you can't dictate how much or when you will be compensated for your efforts. A compoundable return on unleveraged capital over an investing career of 20%p.a would be legendary ( ie Buffets long term return is only 20%) - realistic - shoot a little lower.
You might have good years and knock the socks of 20% in any given year - but long term the market eats dreamers that don't have the humility to understand the nature of their relationship with the market and the skills and aptitude to deal with the lean periods.