It's a landscape company. Maybe you have a font in head ?
what about using the same font that is used on the truck bed? Just make it bold
more importantly why did you make this and start the installation before asking what the best font is to use?
I would suggest
https://www.myfonts.com/fonts/kastelov/nolan-next/extra-bold/
https://www.myfonts.com/fonts/rene-bieder/campton/semi-bold/
The font and design already on the truck are sharp lines and edges so this font needs to follow the same concept