Question
Is it possible to plant a 10ft Norway Spruce and maximize it's height at 20 ft?

Answer
This is not a good idea.
The Norway Spruce (Picea albies) is not as well known as other spruce trees, but should be. Norway Spruce trees are rated zone 3 for hardiness but are often found in colder areas. They look similar to the White Spruce, with the exception of the branch ends. They sweep downwards swaying in the breeze. Common Norway Spruce trees are huge but there are a number of dwarf varieties available. Choose one that suits your garden. 'Acrocona' grows to 20 ft. (6.1m) tall with graceful hanging branches. The unusual purplish pink cones are very attractive. 'Cupressina' is another Dwarf Norway Spruce with more upright branches.

I would check with your local nursery and select a dwarf variety like the 'Acrocona'.