It might be worth talking to this guy about all the stuff you have, or at least email him the pics.
http://www.stevesamps.co.uk/wp/?page_id=19
He isn't a million miles away from you and can probably give you the lowdown on all of that stuff.
His prices for servicing valve amps and replacing valves are pretty reasonable. I've owned a Peavey 5150, an Orange Thunderverb 100, and I blew up my mates vintage 70's Orange 120w amp, and I can confirm that running a decent valve amp is like running a small car in terms of service costs!