It will be very difficult to dump the market further(it is possible, but it will be very difficult and dangerous), because the miners are already working at a loss on some coins, like ethereum. Bitcoin almost fell to mining cost price, so, i think, it worth to start to buy now.
Every time the market is down, I believe that it is the time to buy the coins. Whenever you buy coins low, there is a greater chance that you accumulate a higher amount of profit that's why every time you have a chance you need to grab it.
I agree with you, having an excellent position for buying prospective coins is very good, you can earn a lot of money. I am constantly analyzing the market situation.