Si, don't expect a wage or salary of any significance. I note you are going to become an instructor to build hours. When you do this, you may find it hard to focus purely on instructing to your best ability (ie you may be tempted to nurse your logbook).
You may like to also research for other options such as parachute dropping, scenic flying, etc. They may pay about the same and have similar hour building opportunities.
Kermie