Emacs for Mac OS X - questions

[Marc Tfardy]

I plan to switch from windows to intel mac and Aquamacs and I don't want
use windows under mac - neither in virtual machine nor as dual boot.
Emacs is one of my main application so it is very important for me that
all things are working as usual. Here my questions:

  - can I switch off menubar, toolbar and scrollbar?

  - is the look & feel approximately like GNU Emacs?

  - can I open file without popup dialog - simply with C-x C-f in
    minibuffer?

  - can I suppress all popup dialogs?

  - working M-w, C-w, C-y or must I use C-x, C-c, C-v?

  - can I switch off tabs?

  - working all this nice extension elisp packages from internet without
    any kind of adaptations?

  - what GNU Emacs features do not working in Aquamacs? In "Appendix
    F - Emacs and Mac OS" is written:

    "Emacs built on Mac OS X supports most of its major features except
     display support of PostScript images. The following features of
     Emacs are not supported on Mac OS Classic: unexec (`dump-emacs'),
     asynchronous subprocesses (`start-process'), and networking
     (`open-network-stream'). As a result, packages such as Gnus, GUD,
     and Comint do not work. Synchronous subprocesses (`call-process')
     are supported on non-Carbon build, but specially-crafted external
     programs are needed. Since external programs to handle commands
     such as `print-buffer' and `diff' are not available on Mac OS
     Classic, they are not supported. Non-Carbon build on Mac OS Classic
     does not support some features such as file dialogs, drag-and-drop,
     and Unicode menus."

     Is it still true for Aquamacs?

  - on which inconvenience and discomforts do I have to count? What is
    different to GNU Emacs?

thanks for answers!
regards
Marc

PS. Sorry for my english!