I would advise on stabilising your g/litre as the amount in the boiler before distillation.
For example, I macerate at 50% ABV.
I look for 33-38g ingredients per litre, at 35% ABV, the strength I distill at. Depends on the type of gin.
Also bear in mind that some botanicals are not as flavour concentrated, so you need to use more.
So when macerating at 50%, I use 43% more ingredients per litre.
Example:
51.1 g/litre, 50% ABV
When diluted to 35% this would be:
35.8 g/litre