You should read some John Owen. Good stuff but a slow read.
You have a nice looking set up there. One thing... before you get the Marshall Stack do yourself a favor and check out the Mesa Boogie Mark V 25 watt head with a 2x12 cab. You can get almost any classic rock or clean sound out of it and it's a DEAL. You probably wont even need any pedals with it, though a Rangemaster or a good compressor pedal might be useful. I had not idea about the Mark series until I got one. You MUST read the manual though because every channel is WAY different. Some you have to keep the bass below 9:00, others you can push it up but once you get used to it, it is awesome... Then again a Germino or a Marshall is nice too. I hear lots of good things about the JVM heads from people who play live. I like what I've heard of the V/M too.
Good luck. I hope you get exactly what you're wanting.
Nice studio... I agree about the wood floor. I have carpet and once set up, I'll probably pull it all out and put in a wood floor too.
Julien