It is completely safe to take Sprint with coffee. It is generally advisable to limit caffeine intake to 400-600 mg per day. Different people have varying tolerance to the effects of caffeine.
One serving of Sprint (2 capsules) contains exactly 200 mg of caffeine. While a typical cup of coffee has 100 mg of caffeine, the real caffeine content of coffee varies by the cup — that imprecision is part of why people are switching from coffee to Sprint.