In the old days, the emphasis was on overlap (good for high revs, crap fro idle and low speed work) and valves did not open particularly wide (less valve train acceleration required). After literally billions of dollars of research, engines now put out even more hp/litre, run cleaner and run longer. Now cams are ground for more lift (more power throughout the range) and less overlap (cleaner combustion). All that to say, don't throw out the baby with the bath water. If the overlap is not too extreme, extra lift may well be a big plus.