Tursday -- mostly Anglesey. Off the main roads where possible.
Friday -- Portmeirion. Returning over the tops and the source of the River Conwy.
Saturday -- Great Orme, overlooking the mouth of the same river. Cable car, marine drive, &c.
Sunday -- Three churches, ask me later. Eventually Church-in-Wales in Llanberis. Not up Snowdon. Lake railway. Trawsfynydd.