Depends entirely on what you're trying to achieve.
If you have soft water and want a malawi set up, then it's certainly an option. There are others, but this is a recognised way forwards.
One simple piece of advice I will give is to not mess with the water in a way that you're not willing to keep doing in the long term, otherwise you'll never have a stable system.
Adding minerals, lake salts and trace elements will help imo, if you have got hard tap water which is high ph then you won't need to add much if any of the buffers, instead look for lake salts (which will make the water harder) Seachem lake salts is very good or tmc cichlid pro mineral I use both in 2 separate tanks with great results and perfect stable water conditions.