[TYPO3] Simulate page for menus

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Hi list!
I would like you to give me an advice of how to solve the following problem.

I have pages-categories:
cat1
- subcat 1-1
-- subsubcat 1-1-1
-- subsubcat 1-1-2
-- subsubcat 1-1-3
-- subsubcat 1-1-4
- subcat 1-2
-- subsubcat 1-2-1
-- subsubcat 1-2-2
- subcat 1-3
...
cat2
...
cat3
...
Each page has items-articles in it, simple table with several fields.
I created plugin to show items on these pages. Using TemplaVoila I've
created typoscript element lib.itemsList and in setup I wrote:
lib.ItemsList < plugin.tx_itemslist_pi1
On each page I show list of all items from this page and all subpages.
Besides, each page has its own image (use Files filed in backend),
navigation - list of subcategories, list of all categories on this level
(with active element) and so on.

Now I have to show single view for each article, all navigation output must
be used from page where this article is located. F.e. if article is located
on page "subsubcat 1-1-3" then in navigation this page must be shown as
active.

I have 3 solutions. Which one is the best solution to your mind?
1) Create on each page-category new page-singleview and place plugin with
single view on each and show article with id from piVars.
2) Create 1 page for all items. I mean 1 page for single view and show
needed article with id from piVars
3) Create mode for existing plugin, and show this mode when I have piVar set

Pros and cons
1) This is not a good way of doing it.
2) The problem is that it is impossible to show navigation, because i am on
different page. Maybe someone can tell how to simulate one page on another?
3) This is the easiest way, but not good enough. I can pass id of element
from one category to page from another category, what then?
And I can't create link like http://somesite.com/article/2345/ not
http://somesite/cat1/subcat1-1/article/2345/

Could you please suggest me which one is the best way to go?
Maybe you have some other ideas?

thanks in advance.


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