My first question before any of all of this mentioned would be, "What is a decent income?"...
I have been hand pouring for several years now and turn down jobs/orders weekly as my "real" job pays the bills. If you can do quaility work, you can get paid and paid well.
Make it simple though... Figure out what a "decent income" is and then figure out how many bags of baits you have to sell to get there. For example... If $30,000 is decent to you then you need to sell "X" bags of baits at $3.00/bag. Check out the costs of the molds, plastic, web site, marketing, bags, etc.
With this simple example, you would need to pour and sell over 200 bags of hand poured baits (or 2,000 baits a week if there are 10 per bag) a week just to GROSS around $30,000. Take out your expenses and you are talking closer to 300/week.
Not hard for anyone that hand pours to tell you "GOOD LUCK" with that plan.
Anything is possible but odds are not in your favor as mentioned, the competition is tough, and it does take a little while to build up your client base as well.
Just my thoughts..... Jim