Electrical Panel

​On my inspection the other day I had multiple issues before I came across this. The way this house was looking I wasn't shocked(no pun intended) to find these culprits in the electrical panel.
(1st pic)The immediate thing that jumped out, is the multiple brands of breakers being used. This is a concern because of compatibility reasons. Also tells me that someone is trying to be an electrician...not a good idea!
(2nd pic)The top two circles are what we call "double taps". This is when multiple wires are connected to one terminal on a breaker. Not good! This is definitely a safety issue due to fire. The bottom circle is a floating wire not connected to anything...an accident waiting to happen!
Getting a licensed electrician to come out and fix these issues along with other concerns I found on this property won't be cheap! Be smart...get an inspection and protect yourself and your investment.