We use the Brad Penn oil
http://www.bradpennracing.com/ and you may want to check on the Mobil 1 oil as it has also changed for the bad and is not really recomended for flat tappet cams any more.
Remember if the oil container does not say racing oil on it don't use it with flat tappet cams.
We have always used the AMSOIL in our racing engines we have built for years and so far non of aur customers have had any oil related problems.
On all the SBC cams we buy we order the P-55 cores which is the performance core and we use the tool steel lifters and I have heard that the Johnson lifter are a good choice as well.
Some times if you have good quality lifter and a good cam core it does not matter how its broke in as it may not last.