orgmode for many continuous tasks?

[Mycroft Jones <mycroft@reactor-core.org>]

I'm wondering if org-mode can do this:

I have many tasks.  Some are one off.  But many are tasks that will take a
period of time, days, weeks, months.  I need to schedule a bit of time every
day.  Over time I can complete the tasks by plugging away.  But I have so many.
Half hour chunks work for some tasks, 1 or 2 or 3 hour chunks work best for
others.

1) writing 3 different books
2) learning 2 different languages
3) 2 different types of exercise exercise
4) 3 different ongoing tasks at work
5) watching videos that friends send me
6) reading books on my night stand
7) various one-off tasks
8) scheduled items, where I have to do them at a scheduled time.

So, for each broad category of task, there are subtasks.  So far, it looks like
orgmode is good.  But, what I'd like is to automatically generate scheduling
suggestions for the day.  For instance, if I've been putting too much time into
languages, then schedule more time for writing the books.  And if I've focused
too much on one book, remind me to put time into another book.  I'd like the
scheduler to be a sort of time-accounting system that suggests work for the day
in a way that balances the tree.

Within each branch of the tree, I'd like the branches to be allocated roughly
equal time, over a period of weeks and months, on a day to day basis.

Is there a simple workflow in orgmode that can do this?  I haven't done elisp
for 10 years, but I'm comfortable with it.  Would this be simple to implement?

Mycroft