I'd say, look for something in the $1000 range. If money's not a huge deal for you, then get the $1500 Orbea, but I would say that 'can' be overkill.
I've seen people buy their first roadie and drop a ridiculous amount of money on the bike, only to find out 2 months and 50 miles later that cycling just isn't for them - and the bike sits in the garage collecting dust.
Personally, I'd recommend looking for something around $1000 with 105 componentry. That's a solid bike, and if you were to get into racing in a year or so, it would still suit you well. Then if you decide cycling really isn't for you, or you just like using the bike for some light recreational riding, you're not out as much money as you would be had you bought something more expensive.