Dead Dells-Advice Needed, New EFI Kit or Weber Carbs Options

[GTown74]

My 74 2.0 was rebuild back in 1998 and I could never get the 36mm Dells to run out right. It was taken to a local Porsche shop who also had no such luck. With my new business just starting it went into the garage. I'm happy to say it has seen a lot of restoration in the past 6-months but now I'm down to the engine again.
It has been taken to a local aircooled specialist who ran into the same issue. The carbs have been soaked, a rebuild kit installed but it still has issues. After trying a different set of carbs from the shop it ran like a champ. They have recommended a new set of webers but I've also been looking at the CB Performance Quick Tune EFI System.
Are these kits worth the extra money and will the engine be more reliable with them vs the Webers? I would also be interested to know of other kits options avaliable.
My local shop has given me a rough estimate between 10-15 hours to install. Keep in mind that I'm no mechanic but do know how to sync up my carbs. I really just want the option that will keep it on the road, be as reliable as possible, and give me the least amount of problems. I've had my 914 since 1988 and it has seen more garage time than road time...I now want it to be the other way around! I'm willing to spend the extra money if it is worth the cost. All advice is greatly appreciated!