XLM ETC ZEC ADA FCT BTT
no same coins in our bags haha
good luck with that x70

i am not sure that i will hold to 2021 every single one of them.. if i make x5 in one of them i sell and invest in other coin that in a dip
Most of the above mentioned coins would have equal peaks and dips so I am not really sure if you could find any option to reinvest in any of the coins in a dip once you find 5x profits into any one of those coins. You might set a time limit for investing into those coins which in case of OP is 2 years from now.
This time interval might not make you greedy and also you could have immense benefits as we all know how profitable any of those coins are in case of long run. You should try to maximize your portfolio by adding few more potential coins so that you could continuously have profits and could minimize the risk of loss.