Soquin, I use shampoo and reconstructor every week. I never use pure protein, just reconstructors.
Infusium 23 was used by a lot of people following a braiding regimen called the Crown and Glory. I also would recommend using it if you find nightly baggying makes your hair mushy--which means you need some protein.
I think if you're using Infusium 23, you may not need to use a reconstructor often because it provides protein...and is very watery which might mean it penetrates strands easily. I think wearing a plastic cap for the night would be a good idea.
A lot of people avoid SLS (sodium laureth/lauryl sulphate) shampoos because they find them drying. If you're one of those or just concerned about using any "unsafe" products, I recommend Giovanni line shampoos or Trader Joe's line of shampoos. I find them not to be drying at all.
A reconstructor in my opinion is safer to use than pure protein because it has moisture in it and saves you having to worry about protein overload.