You can check the current amount the gas is traded in jita and decide situational: https://www.fuzzwork.co.uk/ore/gas.html?region=10000002
If you are interested in how I did “ninja gas mining” as a younger pilot you can read that on my blog
Most of the stuff about navigation and so on will probably not so interesting for you anymore but maybe you will find something useful.
If you have feedback I would be happy if you let me now in this thread or directly on the blog.
Cheers.