I currently have a 20l pot I want to be able to do full boils with my extract, currently 5g but might move towards 10g soon. Also I want a pot that I can eventually use towards my all grain equipment. I would like to go Blichmann. I am thinking of buying the 15g boilermaker pot with the autosparge hole drilled. That way when I am ready for all grain I can get the sparge kit. Is there a way to do that and seal the hole with something. Also I want to get the thermonator plate chiller and maybe go with the Blichmann floor burner. Any suggestions or does that sound like a solid plan? Any adapters im missing maybe for the propane tank?
This plan will work. But what others are trying to say, this is also the most expensive plan to take. I was in your boat a year ago. Got a nice bonus check (first time in a while) and was overcome with the blingy SS of the 15 gal blichman. Bought it to upgrade from concentrated boils, knowing full well we'd be doing AG by the end of the summer on a single tier rig. I had the money, I liked it, and I hadn't discovered HBT at that point. All I knew was what my LHBS had, as I didn't really need to go online at that point, so I didn't do my due diligence in research. The pot is nice, and I ended up getting the false bottom for it. I have the autosparge (still in a box, have never used it), and I purchased a therminator as well.
That all said, when it was time to step to AG, and get a HLT and a BK, I couldn't justify the cost of two more Blichman pots. I bought two pots for less than the price of my single blichman, and they actually hold more than the blichman does. My sparge arm? A cheap $2 "Siphon Sprayer", works awesome. The therminator works great. But it's a plate chiller. Had I known about Duda Diesel before I bought it, I wouldn't have bought the therminator. Duda does the same thing for a fraction of the price.
in the end, it's your money, and you have every right to spend it how you'd like. I guess all I (and others) are trying to say, there are other options that will get you up and running for far less money (money to put toward a mill, or the grain for your first 10 batches, etc). Good luck and happy brewing!