5.9 mods

Hello all. I am coming to ask for opinions on mods to complement my engine. This engine is fully rebuilt by myself. Here is what it has:

fully rebuilt bottom end (stock... and i regret it)
Comp adjustable double roller timing chain
hughes 1110 valve springs
Comp 20-744-9 cam
New, stock heads that are polished
also has been tuned by hemifever

Everything else is stock. I want to add a little more power in the mid rpm range. Here are the mods I want.

52mm throttle body
Shorty headers
1.7 roller rockers. The cam has .480 lift on both intake and exhaust and I want a little more.

Thoughts on this and any other mods? I have the autolite plugs everyone talks about

My main question is the 1.7 rockers. My cam has .480 of lift on both. The rockers would bring it to .510. This sound like a good idea? I know I shoulda gone bigger with the cam but what's done is done