I'm just moving into a DIR set-up now. This is what I have for a reg set: HOG Gear D1 Singles Regulator Package - Dive Right In Scuba - Plainfield, IL. It's the HOG D1 coldwater set-up. They are great regs, and the price is right.
There are also other option besides Halcyon for a bp/w set-up. Again, I use a HOG wing, and I assembled my harness from various bits of hardware (I have a Hollis buckle). I use an Aluminum backplate, but I'm a wee human. I currently use only 5kg of lead in my drysuit. When I have some cash, I may move to a steel just to drop another kg or 2.
Also, once you make the switch from a jacket bc to bp/w, you will also need less lead to sink. Hope that helps.
There are also other option besides Halcyon for a bp/w set-up. Again, I use a HOG wing, and I assembled my harness from various bits of hardware (I have a Hollis buckle). I use an Aluminum backplate, but I'm a wee human. I currently use only 5kg of lead in my drysuit. When I have some cash, I may move to a steel just to drop another kg or 2.
Also, once you make the switch from a jacket bc to bp/w, you will also need less lead to sink. Hope that helps.