I knew that was you the second i seen the name mate!!!!!!!
Then the Astra bit came up

It's me Alan MK4 btw.
Right first off if your after a decent one at a low price then your after a long search as i'm finding out

Try Direct line and HIC for the insurance.You sound like you have a few good plans for it.Have you considered the 8V though? Both equally good cars.
A good purchase would be a Fault finder from Gunson LTD for about ?18.It's acts like the Tech 2 from Vaux but a little less sophistcated.An LED flashes to indicate faults with the car and just just read the book it comes with and it tells you the fault to the number of flashes! Good eh

As i said the good 16V's are rare now but there will be a few 8V's to choose from.You will find PAS was an option till 1990 i think.FSH is a must as most will be over 100K but don't let the milage put you off as they go forever.