Maybe try something like the Zipp 70 or 110.
If you've never ridden with skis before, straight bars like the Bontrager ones you posted can be kind of hard to get used to - you kind of have to wrench your wrists to grip the bars. Getting something that angles up, like the Zipp, can be much easier to grip.
Also, make sure the event allows aerobars. Some events do not allow it for safety reasons.