Alpaca feeder question for alpaca owners

[teach1rusl]

Hi. If you have alpacas, could you please take a look at this horse feeder from my local CL and tell me whether you think they'd work fine for alpacas: http://louisville.craigslist.org/grd/3020060881.html

I don't have alpacas yet; we're working on the fencing, housing, and gathering of equipment now with alpacas to come next spring. I saw these and thought they would be cool, that the hay could go up top and their grains in the trays below???

Thanks to any who take the time to advise me