я написал ещё - спасибо большое за то, что проверяете!

далёкая гавань
приятный/милый/прелестный гость
слабая связь
просторная щель
эта горизонталь
большой камень
высококачественная мебель
высококачественная нефть - нефть is the black oil, formed deep under the ground
коричневый ремень
утомительный контроль

приятный is something that causes only positive emotions for you, but not very strong ones
милый is adorable to look at in other words cute, also used as a standard adjective or adress for your spouse or lover, in other words - dear
прелестный is the strongest word here, something that is absolutely spectacular

Still, the differences between those words are very subtle.

As for the three words you want to check up on, yes, you're right about their meanings, but just one note to you,
we usually use the adjective бывший to mean former, but прежний is okay too