There is LOADS to do in cornwall! It realy is such an awsome place to live, Four lanes not a bad place to live, you are not to far from cambourne and redruth which would have all the shops etc that you would need, cambourne is a little more rough than redruth though.
Four Lanes is about 2 miles from where i live I have done alot of work around that area when i was tractor driving and know it relitively well. You are not to far from truro, newquay is a little further, maybe 35-40mins ish max. You are also not far from loads of awsome beachs, especialy awsome if you are gunna be down there in the summer. Truro and Falmouth are both good places to go out in the evenings, never been out in newquay but i have heard it is good.
And there is AWSOME riding around cornwall too, mostly natural but there are some okish street spots too.
Hope that helps a little, any other questions feel free to ask them
Adam