Anyone here use Schubeck lifters ?

Where did you read that? What was the context for it? Pretty unlikely any lifter would 'bounce' if the valvetrain was set up properly and the pushrods were correct. Cobbling stuff together usually requires proper verification.

With any engine, you need to make sure the lifters rotate and get the proper amount of oil for the rpm range. Valves can float at high rpm but with an off the shelf cam you would probably not have issues like that.