Way too fast. Peter doesn't exclusively struggle against tall heavyweights. He slaughtered 7 something feet tall Long in one round. Give it a while, Fury.
Why doesn't he just concentrate on clearing up the British scene first? He could fight Skelton, Williams, Sprott, Rogan etc and build up a nice record in the time-honoured fashion and then move up to world level in a couple of years, that would seem the most sensible career path to me.
Not with Fury. He's fighting better and better opposition with every fight. His last opponent, Scott Belshaw, is no bum. He was 10-1(7) and had avenged the defeat