Xe285hl cam

I run a 276/286/110 HughesFTH (230/[email protected]) with a 10.9Scr/8.7Dcr, in a 367,on 87E10 @ 179psi @900ft....... and although it is a standard transmission,it will take a footstomp at under 20mph in second gear, and wind up at 7000 in a heartbeat. that 20mph is 1700rpm. In first gear, I can dump the clutch and stomp it immediately .This with 295s
At your elevation and subsequently lower pressure I would consider the next smaller cam, with 1.6s like Wyrmrider mentions and maybe on a 108.

At 2500ft IMO 11.3Scr is not enough for that 285 cam
IMO it is barely enough for a 272/108 FTH . You will be much happier.