Yes please keep us posted.
It may be better if you actually think of migrating to Joomla! 3.x
I suspect that the very old 1.9.0 Stable 926 does not have quite as many capabilities as the latest jD 3.2 series. So it might be a solution to do this the very simple way of creating the categories, turn off auto-monitoring off and then loading up a few files at a time, then do a manual start of the monitoring from the control panel. Boring but may be less stressful!
Note a problem can be if you have any Content Downloads in articles as the ids may have changed - this is better in the 3.2 series.