Having extra reserve fund will be necessary and a must to protect our trading position when its almost liquidation so you can open position to back up your previous trade. I can use leverage 25% or more and use 10% or less of my capital. I don't chase a bigger profit at once but I prefer to take profit for a small amount but continuously based on the market situation.
Having such set percentage to protect your assets and capital for long way trading is very effective means of protecting your trading position and also to have a long way trading time which is something that most traders may not be doing based on the expectations from trading most especially when you are trading cryptocurrency such as the most volitile asset's that have high tendency of giving a pump market.
That is far from the overall point in the ops but based on your above analysis, having such a backups is with the aim of taking potential small profits, if that be it and you can remain consistent with such approach and be able to remain at profits more than your loses so regardless of the amount of profits it will not matter much
But don't forget to use stop lose feature if the market position can go down deeper. That will prevents you from the lose and you can open a new position based on the market movements.
Stop lose is very important feature for trader's but just a few traders make use of the stop lose features, like myself, I hardly use stop lose, since I have a single trading piar which is Bitcoin and at each point I am confident that my position can not get liquidated before I come back online to monitor my trades and although when I have any need for stop lose is when iay be trading altcoins that have highly volitile market, such coins can't be trusted for anything so there is need to use stop lose.
No need to chase the market by opening more position when you sure the market will go down deep. In this matters, we need to be careful with the market moves so we can decide carefully.
Cryptocurrency trading has diverse aspects and each of them have their advantages and limits, and at that we have to carefully have a think over our decision, because at times since the market is unpredictable, one could gamble with the fund's to accumulate more profits if the market give you a discount price which you know is a temporary discount price, opening a position at that point give you opportunity to accumulate more profits.