Gear driven cams have many benefits in regards to racing performance...but think about the one "unspoken" disadvantage...race engines are made to last...ONLY for an entire race, then the engine is torn down and rebuilt. Given the expense, knowledge and precision needed from a "team" to do the deed, it is not the cost of kit materials, but a question of longevity and application to fit your needs. Subjectively the "seat of the pants" difference is likely invisible in practice, only in the mind...as wants and needs.
A day in and day out street engine goes through many more temperature changes, intermittant start and stop functions, loading, and varying degrees of long term mechanical conditions not nearly as well controlled as a few single starts, a few hours of high temperature, high stress race track conditions and then on to the trailer it goes. Consider what others have done and know most have used chain driven cams with no issues.