Why do you say that? Yes, $75M poses liquidity issues, but that doesn't mean that a smaller amount is easier. I'd wager that a smaller portfolio is harder because you can't diversify to mitigate your risk.
Agree, if you are buying only on days where RSI is extremely low (below 30) then you can be much more confident you won't sell at a loss compared to buying when RSI is above 50
I can buy JDST at 9am for $60 and sell at 9:45am for $60.60. On a balance of $2000, this is an easy $20 for basically no risk, imo.