[Orgmode] latex export: using levels to export to beamer and article-only mode (with beamerarticle)

[Jay Snoddy]

 I am attempting to make a presentation and lecture notes out of org, 
similar to what I have done before in normal latex.

I would like to use the heading levels to determine what does or does 
not get displayed in presentation mode.  The very lowest levels would be 
seen only in lecture notes; the latter might be extensive text.
(Note that the lecture notes are to be in the latex class, article, with 
\beamerarticle.... Not as the beamer "notes" per se .  Beamer allows for 
"modes" to hide article content from slides)

I am an org mode and emacs newbie and seem to be making newbie mistakes 
in approach, though, so I would like to ask for ideas on the "best" 
approach for this.

I would like to do something like the following...

* section
** subsection
*** frame (but possibly subsubsection in article mode.)
**** one (and only one) item within an itemized list environment
***** \only<article>{ \paragraph{%s}}
****** \only<article>{ \subparagraph{%s}}
******* \only<article>{%s}
******** \only<article>{%s}

I would like to avoid blocks or labels for this and just determine this 
by heading level, as --at least in my newbie hands-- moving things 
around when writing/revising is a lot simpler if I just stick with 
simple outlining.
For the subset of work involving lecture notes, I would be willing to 
lose ability to change frame levels.
I am using a day old Org version.

Any thoughts or suggestions would be very much appreciated!