2004 Gt Cams?

[Max Moore]

Hi guys first post on here. I have a 2004 mustang gt 4.6 and I've got most of the bolt ons I want aside from headers and I'm hopefully going to get some 3:73's in it soon or 4:10's. But I found a deal on some stage 4 comp cams with the valve springs and retainers. He never used them because he sold his 03 GT before he could install them and he's charging $500 for the cams springs and retainers which is almost $900 value. I really don't want to pass up on this deal and want to get a big gain in power but is stage 4 too much for a daily? Obviously I wouldnt install them right away but it'd be nice to have for the future. If anyone could give me some advice that'd be great