For most bench shooting I will recommend RAW HM1000x or FX Crown in .22 or .25... in my opinion two the best bench, classic rifles.
B
I agree fully, with a slight edge going to the RAW.
... Or a Red Wolf in .22 with the GC2 electronics (65 FPE at the muzzle). Likely the most accurate 100 yard plus gun in my collection, and it has some real good competition.
But of the 3, the Crown is the winner for potential caliber changes.
And you speak of only getting 1 PCP - such foolhardiness!
Hold off on the Delta Wolf for now, and instead get a RAW and a Red Wolf HP, one in .22 and the other in .25.