5yes, the world needs more people like you! What you are doing is awesome and it’s a great model for young people to emulate. I can’t give much advice other than to ask how much experience you have volunteering in lower income developing countries (as opposed to middle income developing countries like Mexico or Turkey).
The poverty you will witness may be too shocking for some people. It is one thing to read about malnutrition and something else to actually see children riddled with disease. I believe they have electricity and running water in Haiti, just not everywhere.
Something else to prepare for: huge disparities in income. A minority if Haitians live with first-world amenities and have somehow got used to live surrounded by abject poverty. This contrast may shock you.
Also, some cops and government officials will be honest and will help you, but others will obstruct you and ask for bribes.
I’m only trying to help you be realistic and prepared for anything, good or bad, that may happen. Best of luck to you!