>>1883102For navigation, charts are mandatory if you plan to survive any decent trip without the help of emergency services.
Use OpenCPN or OpenSeaMap on a simple laptop or tablet, should be good enough.
For weather,
www.passageweather.com is a nice resource.
But yeah, this is a pretty bad idea in general, especially if you have no experience. People who knew what they were doing crossed oceans in such boats, people who didn't ran aground on the first river bank.
Apart from that, boat maintenance is not easy and not cheap.
