Like what Brett and Paul are trying to tell you, its not just about the specs the manufacturer gives you ie duration and lift
Cam lobe aggression plays an important role in how quickly/much air gets into your cylinder.
All these cams you quoted are very mild in terms of lobe design. Do what the guys are saying, either keep your standard cams for your -7s or if your going to change to a big single get the custom cams from UNIGROUP here in Aus.. they re not cheap but why go to the trouble to do a half assed job.
PS cant you micro wave a cake Paul?