Trading is not scalable. Point. You can not do trades with hugh amounts of money in short timeframe. So you will move into long term trading, investing...
...once you reach some dozen million dollars or euros, possibly.
A lot depends on how you trade. The longer the timeframe, the easier it is with large funds. Scalping is not possible with high return if you manage a 100 million USD fund - you simply can not enter / exit the market fast enough.
That said, how large do you WANT to scale? 5million USD profit seem to be way below the critical limit for short term, even 25 million USD should be doable (assuming a not scalping approach). Swinging 100 contracts does not seem to be TOO bad from even stop loss under most circumstances (i.e. not TOO much slippage).
What works against is ticket size. Once you get large enough, a stop order will execute with more slippage. Period 😉
So, I would say: stop worrying 😉