Blitz is the ability tanks have(And they can attack twice in one turn). Maybe the Tucano sould have one extra movement point(most early fighters in Far Horizons will have a movement rating of at least 2). But if the Tucano is as good as you say it is Civarmy, maybe it sould have Blitz as well, the advantage of this unit for Brazil will be offset by Brazil's lack of Jet Fighters until Stealth Bombers and Raptors become availible....
is that a good setup?
BTW....Do you know of any good cavalry units that might make a good UU for Venezuala?(They are now in FAR HORIZONS BTW!!!)