All of us have our own theories and processes developed, and what might be a perfect system for me may not be one for you- we will both make great beer but in our own way! The B3 system is a great average way that is customizable as needed for your needs BUT until you have a few months experience it would be hard for you to understand what your needs are!
With the equipment you have you can go all grain for about $50. A simple 10 gallon orange drink cooler with a weldless fitting is about the easiest way to move to all grain if you are already doing full boils. You can make your own for less too!
Then, in several months, once you have figured out what YOU want in a brewing system you can go and buy/build a big fancy system! I'm trying to make friends with someone who owns a welder now personally- I am quite happy I decided to wait to build my system rather than building/buying when I first started all grain!
