cylinder heads

hello people heres my predicament. i have a renault megan f7r 710 head, now this has larger valves than the williams f7r 700 and the f7p head BUT smaller inlets ports and milder cams.

i have a a 1.8 16v head and in a ideal world id spend £££ having the 1.8 16v head cut for the larger valves but with this megane engine being turbo charged does the fact that the smaller inlet ports make a diffrence with it being used for forced induction instead of normally aspirated?

and should i put the 1.8 16v cams in as they have more duration?

if it where me, stick the valver head/ inlet manifold on ,and use the megane cams, there is only 2mm difference inlet valve size anyway, possibly fit the megane throttle plate on also if it will fit :)