Welcome to the forum dman
All I would say is be wary of any of the sites where there's little to no verification or feedback system like Vivastreet. I got burned by a bait and switch for an ad on Backpages.com, but in hindsight I should have known better.
When you get the 'selfie' type pics that are a bit amateurish I tend to think this is more likely to mean it is accurate (although obviously still not 100% guarantee) than ones with more professional looking pics.
As Mr Fishy says, these girls look more Romanian and Fishy has been swimming around enough to have a good sense of these things. It probably will be the girls in the pic, but most Romanians are notorious for giving a bad service
Simple answer to your question is do you think it's legit yourself? If you have even the slightest doubts you should back away, otherwise all you can do is take a punt. If you're unsure, personally I'd suggest picking someone with more reviews/feedback either here or on AW.
Good luck. Let the rest of us know what you end up doing.