Emacs codepage problems: Terminus font, utf-8 and cyrillic-translit input

I love the cyrillic-translit input method for Emacs. However, after I set the wonderful Terminus as my default font, the Russian characters appear in Arial or something (in any case it's not Terminus).

How do I fix this? Setting the default font to UTF-8 (Emacs equivalent "-outline-Terminus-normal-normal-normal-mono-16-*-*-*-c-*-iso10646-1"开发者_如何学Python) doesn't help. I guess this possibly means that Terminus lacks decent UTF-8 support?

Anyhow, I'm using the following snippet for switching between cyrillic-translit input method and the "normal" mode:

(defun toggle-cyrillic-input-method ()
  "toggle between French and no input method"
  (interactive)
  (if (string= current-input-method "cyrillic-translit")
      (set-input-method nil)
    (set-input-method "cyrillic-translit")))
(global-set-key [f9] 'toggle-cyrillic-input-method)

Now -- is there a way to make the snippet not only switch over to cyrillic-translit but also switch the codepage when I press F9?

In other words, how do I make it also toggle the font between "-outline-Terminus-normal-normal-normal-mono-16-*-*-*-c-*-iso8859-1" (Latin) and "-outline-Terminus-normal-normal-normal-mono-16-*-*-*-c-*-iso8859-5" (Russian)?

It's the only workaround I (as a non-programmer) could think of. Any other ideas are welcome, too. Thanks!