SR = stock replacement. Don't expect too much.
The cam you have would require a 3.73 or 4.11 gear and a 2800 stall. What gear and stall are you planning on using? Plus you really need about 10:1cr for that cam, maybe even more since you will be at 8500 feet.
a set of 64cc heads would be a better choice. A set of iron eagles (200cc ports) might be a good choice.
why put in a 6500 rpm cam and only rev it to 6000? If you don't want to go past 6000 (for some reason?) then get a cam that only pulls to 6000.