LSA-Overlap-Exhaust timing - Cam selection help

[Radar]

From what i've been reading overlap is just a good way to waste fuel and boost,
so this leads to my question of what is the ideal cam for a boosted rev happy 4banger.

Something with small duration, tight LSA and minimal overlap
Or
something with a big duration, wide LSA and minimal overlap

I.e.
254 In / 272 Ex
120 LSA - 118 degree intake lobe
23degrees overlap

OR

222 In / 254 Ex
109 LSA - 106 degree intake lobe
20degrees overlap

[the_random_hero]

Duration will come back to where you develop your peak power, after a point it will just blow straight out the exhaust. Ideally you would want smaller-ish duration and as much lift as you can get without ruining your top end.
As for LSA it isn't something I'm too knowledgeable on, but I would probably go for a wider profile as it would flatten out the torque curve (something a lot of turbo engines are lacking).

[Cameron_Datto]

I have always ended up a LCA Speration around 114 deg for a broadest midrange range torque , Set the inlet cam to 109>110deg Max lift and exhaust to 116 > 118 deg max lift , I feel this a good stating point for cams 260 deg duration and above with a good WIDE powerband til 7000rpm ,


Eg : LOBE CENTRE = 110deg (inlet) + 118 deg (EX) = 228 deg x 0.5 = 114 deg

[Radar]

Cameron have you ever tinkered with a wider LSA?
Everywhere I've been reading recommend around 114, I'm guessing that's to get a decent comprise between peak power and a decent rev range?

Its more, I'm really interested to know whats the difference between:
1) What happens when you have big duration and very wide LSA 114~118+?
-Do you loose the peak power but make up for it in RPM?
-Does the wide LSA improve the idle even thought it has a large duration?

2) What happens when you have smaller duration and tight LSA 106~110?
-Do you gain more peak power but loose a fair bit of RPM?
-Does the idle stay good even with the tight LSA due to the small duration?

I know its not as simple to just go right here's a LSA it'll do this on every engine, so lets assume this is going on an engine with a supercharger, extensive head work, and very high flow exhaust.