Gen 1 Prius project car

Hey all - I just wanted to say "hi" and thanks for this forum!

I bought a Gen1 Prius (2003) from a friend for $600 because all it needs is a new traction battery and a new 12v battery - he's put a lot of $ into it over the last couple years and is just tired of repairs. I don't mind doing repairs on a "project car" which my two teenage sons will also drive.

Reading the posts on this forum encouraged me that I could do these things. I'm not at all afraid of electricity or computers as I'm a computer guy professionally and have done a fair bit of car work in the past - I was just worried about the costs and cascading repairs but it seems like a good choice right now.

I certainly never thought I'd own a Prius as a "project car", LOL. Current other vehicles:
2010 Honda Insight (so I'm used to hybrids to some extent)
2015 Ford Edge Sport
2016 Honda Odyssey

At some point I'll update if this was a big mistake, but in the meantime - thanks either way!