Gelb initial roster projection. He has Guthrie, Cave, and Hall filling out his bench. Painter winning the 5th starter job. Which pushes Falter to the 8th spot in the bullpen over Nelson with Bellati getting that 7th spot.
My tendency would be to start Painter slowly so his innings could be used in the second half of the year, but I do understand letting him win a job (and maybe earning a bonus pick if he is ROY) if he can. I probably send Falter to the minors since Nelson is a more flexible reliever and there are already 3 other LHPs in the bullpen in Alvarado, Soto, and Strahm.
And Corey Seidman's take. A little less committed on his projections for 5th starter and the last man in the bullpen. He does have Clemens on the bench instead of Cave.