Do some research I am very new to Bitcoin and before I made my first purchase, I Looked at all the exchanges available to me in my region and made my decision based on that. How frequently do you plan to make withdrawals? 4.80$ on a transaction of 2k-3k is a minimal percentage. A flat withdrawal fee is much more beneficial than a % of coins withdrawn. It's far more secure to keep your coins in your own wallet, I waited until I had X amount of coin before making a withdrawal to mitigate the amounts of times I need to do so. Consider your risk tolerance! The longer you store your coins within an exchange  obviously the risk is greater. Is less risk worth the fees? My opinion anyways I hope it helps!