Nice little 30 mate.
I know I have learnt some similar lessons from buying my car as an over-excited young bloke, but I spose that's the way we learn !
On the bright side at least it seems you don't have large amounts of rust in structural areas to deal with, nor kilos of bog and previous dodgy repairs.
When you get around to an engine, might I suggest you choose the 5k. A 4age will need engineering and will be very illegal on our crap new P plate laws. You will most likely be able to get away with a warm 5k and most cops won't know what they are looking at.
It sounds like we are in a very similar area, so once my car is on the road it would be great to go for a cruise.
Cheers,
Dougal