All the pictures I have seen so far have been high-optioned, which means crew cabs. Since the overall dimensions are somewhere between a 150 and a Sport Trac that means the 4-door likely has a 5.5 ft bed.
But that doesn't mean there won't be a standard or extended cab with a 6 or 7 ft bed.
As for the power, more power from less engine is good, but I have found that more cylinders means easier launches.
Back when we started dating my wife was driving an S-10 with a 2.2L. Due to wear, tear, tech power to weight ratios, and gear the 2.2 was putting a little bit more to the ground than my 2.9 was. It was still easier to stall it.