GSoC's possible project

I'm a student and I'm planning to submit a project for Google Summer of
Code.  I would like to receive feedback about to implement the vacumm
scheduling in order to allow maintenance's windows.

I have read the whole discussion about "Autovacuum improvements"[1]
taken in January.  Alvaro Herrera suggested two improvements,
(probably following an idea of Matthew T. O'Connor), which were:
- Scheduling (a maintenance window)
- Process Handling.

As fas as I know, the process handling is a work in progress[2], while
the scheduling is defined (almost complete) but not implemented yet.

Which is not clear to me (yet), if it would required collecting enough
information through implementing a sort of 'VACUUM SUMMARY'[3].

I would like to receive opinions or suggestions about picking this task.

I haven't explained in more detail what is this scheduling, because I
think, it was clear enough, as far as I understood, in the thread.

Thanks in advance, 

[1] http://archives.postgresql.org/pgsql-hackers/2007-01/msg00684.php
[2] http://archives.postgresql.org/pgsql-hackers/2007-03/msg00639.php
[3] http://archives.postgresql.org/pgsql-hackers/2005-07/msg00409.php

-- 
Germán Poó Caamaño
Concepción - Chile