Kelly's striking partner scored his 251st goal for the club in Sunday's 2-1 First Division play-off victory over Bolton, which makes Wolves narrow favourites in tonight's return at Burnden Park.
If successful, the Molineux side would probably meet Reading in a Wembley play-off final on 29 May. The Berkshire side carry a 3-1 lead over Tranmere into tomorrow night's home leg at Elm Park.
"Bully's psyched up. He's waited a lot of time to play in the Premiership, spent a lot of years here waiting for the biggest stage," Kelly said.
Bull, 30, scored more than 100 goals in his first two full seasons with Wolves, leading them from the Fourth Division to the Second. However, spurning lucrative transfer options, he has remained in the second tier ever since.
Approaching his testimonial year, the former England international has scored 19 times this season, despite missing 22 of Wolves' 60 games, while Kelly has 22. In a 12-game run with just one defeat, Bull has struck seven goals and Kelly five.
While Wolves expect to be unchanged for the fifth successive game, Bolton are definitely without the suspended Neil McDonald - sent off at Molineux - while striker John McGinlay (shoulder), goalkeeper Peter Shilton (groin) and defenders Jimmy Phillips (foot) and Gudni Bergsson (hip) await fitness checks.
Reading should be unchanged, while Tranmere have an injury doubt over striker John Aldridge, who has an Achilles problem.Reuse content