Having looked at all the guys and their descriptions, I reckon that are all bascially top but some will bottom. If you click on each photo, you get a description that incudes whether they are bottom or top. For example, one guys has this -
Interaction, top, bottom
Top ◎ / Bottom ◎
which i take to mean he is both. Some have an x against bottom and again I assume that means he will not. Another is described s a gay guy and he has -
Back-up
Top (△) / Bottom (◎)
One guy with a triange has in his description "He's basically a versatile top, but he says he can also be a bottom for guys with average-sized penises." I frankly would be wary of assuming this and other guys with similar triangles will be very effective bottoms.
Note that some will not take reservations from foreigners.
Only my personal view but 150 minutes with one guy whom you have never met nd may not be blessed to converse with seems a very long time. Why go for that length on a very first date? I would definitely not go beyond 90 minutes first time around, but that is just me.