PB, I am sorry but I am completely lost. I never told our flying nurse that he should go to Newquay instead of Peranporth. Read the thread........
Take of minima for private ops is subject to your license. With an IMC 1800m and 600ft I think. IR 0/0 if you were so inclined.
The landing minima are the important ones. VFR only for Peranporth and 200ft for Newquay with an IR 500ft with an IMC (recommended but you could do 200ft if current).
Personally I would not be blagging my way out of a socked in VFR airfield regardless of the fact I have an IR.