Cam specs . STD vs High Lift

Looking for the specs on a cg13de camshaft.

Was speaking with an engine builder and he reckons my cams might have a too long of duration for the spec of engine i have.
Spec is:
1.3 pistons
Head & block skimmed .5mm
Head polish and ported
Cbr1000 itbs

I had my cams reground to the ultimate road Pipercross specs. 272 degrees.

Anyone have any experience of these ?
Thanks in advance
 
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