Ill do 4120 then

not too bothered about maps at this stage... ill have to just get the latest disk from somewhere in a few weeks unless they are downloadable too ?

are the facia surrounds specialist order ?

as i now have a large gap each side

Yes. But quite cheap from the dealer for preFL. 1z0 858 069 is the part number if you have climate control. See here

http://www.skodaparts.com/product/octavia-radio-trim-for-sat-nav-2004-2008-50284