cam insight

Ok, I'm going up a few cubic inches with 370 lq9 (new) , going to use my PRC stage 2.5 5.3 heads with 59 cc chambers, already have them, it's going to be a 11.5 compression ratio. It will have ls6 intake and ported TB, and 1 3/4 headers, and I will be hitting it with a 200 shot. Its a daily driver weekend racer 3590 lbs 4.10 rear and 6 speed.
Trying to get my head around the cam shaft that was spec for me, had 3 well known people ,the best in the ls world that I know any way. Spec me a cam and i trust them fully its a
236/250
625/625
115+4
can some one give me some insight on it
Why so big?
Why is The split so much? ( I'm used to seeing a much smaller split )
Why the lobe seperation at 115+4 (seems like a lot)
And why a 13 degrees of overlap?
just trying to learn, been reading everything i can find on camshafts.
hoping for some insight from a cam guru to help me out.
Thanks
And could u tell me if you think this thing is going to be a turd on N/A?
Hoping for 117-120 on just motor.
Any positive advise appreciated.

