How big of an area do you plan to maintain? If you are doing spot applications the hopper size may be fine. However, gravity feed systems don't work well with material that has moisture in it. The material packs in the bottom and a cavity forms so no material comes out.
While the price on spreaders like this sound attractive and may be advertised as multi-use they were originally designed to spread dry fertilizer. It's like a sofa-sleeper, they are okay as a sofa and look like a bed but try sleeping in one overnight.
Best of luck.