To keep all the coins in one wallet is a certain risk. One wrong move and all the work, effort and all the time spent, just disappear. The only right decision is to keep coins in different wallets.
I think it's better not to store it in only one place. because if our funds are taken, then it is likely that everything will sometimes disappear. therefore we do not store in one place.
If you have conditions, buying a purse is safer, but if you do not have the condition, you should use Mycrypto my wallet because the MEW, the Mycrypto wallet pretty well because they work only in the background do not work. Online as wallet MEW, will reduce the risk of hacker attacks