Good evening to all. I've just bought an enclosed trailer and is starting a full renovation. I'm a little bit confused on how to implement the electrical installation. This is what I want: 9ea outlets-two of which is exterior for Tire Warmers, Air Conditioning and Interior Lights. I am opting for a 30amp connection but see so many type of connections. I want a Twist Lock and waterproof connection. Also a connection for a regular 110 connection. Maybe a combination receiving unit. I'm grateful for any advice.