100g of sulfite per litre is typical of d-76 etc.
TEA is a less common strong alkali I used to use for making up home brew RA-4 developer. It was used at paper developer strength at something like 15mL per litre of working solution. Paper developers are usually more alkaline than continous tone film developers.
50g of HQ is a lot per litre. Lith developers use as much as 12g/l working solution, when mixed with the part B alkali.
There is also no formal restrainer. Sulfite at higher concentrations can be a restrainer as well as a mild alkali and an oxygen scavenger.
So your draft formula might work well well diluted, if you can take the fog, but used as stock I have my doubts.
I have played with home brew of what I consider to be something close to 777, and have calibrated its use. It uses glycin and ppd as developing agents. It works well, provided you can 'feed' it regularly, i.e. develop a few rolls of film in it every week. I think I found the formula in a discussion on The Unblinking Eye web site.
It is a repleinished formula that is seasoned with a few scrap films if mixed fresh to start to provide the bromide restraining action. Because it is replenished, it contains some residual silver, and long lived developing agents known to not be too healthy. So if you go there, wear gloves.
CHQ from my reading was expensive and rather volatile to make, and has faded from use.
Only in the original formulation. The commercial D-76 would has less than 100g/L once it is in working solution.