Sorry for deviating from the topic.
Mind telling how you "wrangling data around", the tools you use? I just got a my 5 years bank transactions in a csv. I just looking at the data in excel, wondering how to "analyse the data". Thats when I noticed your post on HN.
Sorry :)
I mostly use Splunk, since I have to correlate a lot of different data sources.
You can also set up an ELK stack (Elasticsearch / Logstash / Kibana)
My excel skills are not that advanced, but depending on the result you want to achieve it might be sufficient.
I would suggest importing your data into a BI tool like Zoho Analytics first and see if that solves your needs, before advancing to Elastic Search or Splunk