Sounds like you have workable solution but I'd like to point out that depending upon the Perl distribution that was used, SQLite may already be there! All of the code to use SQLite installs with DBD:SQLite.

I use Active Perl and the DBI and SQLite ship with the distribution, so there is nothing to "install". Perhaps something to consider/investigate for future projects? Most distributions ship with a lot of modules "pre-installed". In my case there are 281 of them! SQLite is pretty ubiquitous. I've heard that every smart phone has an SQLite DB. Certainly many products such as Mozilla Firefox use it. Anyway, you might be pleasantly surprised to find SQLite already there.