5.3 engine build

Hi I'm new to this site and was wondering if I could get some input. I'm wanting to build a decent 5.3. I've got the whole top end from a 2000 z28 I.e. heads intake fuel rail and injectors that I've thought about using, I wanna install flat top pistons and a cam with long tubes. Any thoughts on this? I want it to have some lope but this is still my daily driver so I'm trying not to get too crazy with it. I've seen posts on cams and heads and flat tops but nothing with the combo that I want so I was just wondering if anyone could help me get some info on this so I can start ordering stuff