That should be fine for what you want! I had to get one with either a side ramp or 2 ramps as my boy needs to see out when in his box, and also didnt want to unload him backwards! looks good for the money though!
I used to have a Marlborough 'Sport' like Shaab's. great little box. I loved it. Sold it when I lost my first horse but now have a Marlborough Hunter which I share with a friend. Is a bit tight for weight when both our horses on board but just the right of legal with 2 - thankfully.