360 Advice Needed - Autocross / Street Engine Build

Went for the first drive tonight, but overheated after about 2 mins. Something ain't right...

Gonna borrow a infared gun from work tomorrow and check if the coolant is flowing as it should be. Upper hose was frm and scorching hot, lower felt hot to, but so did everything in the engine bay!

Temp gauge hit the 250 mark by the time I looped back home... :(