Hello davhi8: Yeah that antenna will work well for you, better than the fiberglass stick that are a non ground plane antenna. 4 Watts will work quit well, especially with that antenna at 50 Ft high.
Its quit impressive when you look at the range equation and see how little the amps help out at times.
My first radio was Gonset G-12 powered by a old car battery, and had a battery charger, with a 102 inch whip antenna on the roof, no ground plane and high SWR but I was able to talk a few miles and had a blast.
Good luck and enjoy
Jay in the Mojave