A good surveyor will spot the obvious things that could queer the sale, like wet decks or unsafe lifelines. I had a really fine surveyor in Bellingham, hopefully yours is the same guy. But he probably won't tell you about the hundred little things that could turn a 30-year old creampuff into a project boat. Even if the survey is positive, you want to have some kind of idea of how much money and effort it will take to make your boat be the way you really want it to be.
How are the cushions? Still firm enough to sleep on?
Any funny smells in the cabin?
Does the electronics suite belong in a museum? How's the VHF radio? Does Bellingham support the channel-28 test?
Take a look inside the breaker panel. Is it full of crappy connections or mysterious wadded-up dead-end wiring?
Why was the engine replaced? If it's got some hours on it, you might have the oil analyzed. That became a big deal with my boat.
Check all of the lights (running, anchor, deck, turn signals, etc). Fixing those can be a bear. Are the cabin lights LEDs? Do they work?
Do the zippers in the headliner work? Nah, forget it, they don't.
Look into the secret compartment under the cushion just forward of the sink. It may tell you something about the condition of the boat before it was listed for sale.
Is there a decent "smart" battery charger? How many house batteries?
Radar? Turn it on. Is it an antique?
Any play/backlash in the steering? Although it's a pain, go into the quarterberth and remove the panel under the pedestal (four screws). Is there play in the idler plate sheaves? If so, it's a big job to fix. Inspect those %^$#! half-inch aluminum nuts. Under power, does the boat track straight? Mine doesn't and no one can figure out why. If yours does too, maybe you can get something knocked off the price. (Naturally, if it doesn't track under sail, walk away).
Is there a wind instrument at the masthead? Does it work?
How are the dinghy and outboard? Those things cost money.
Use the head. Any leaks while pumping? How's the sink plumbing? Inspect the fittings on the holding tank, especially the lower ones (use a flashlight). Are the hoses old, thin and smelly? Is there a macerator pump? Pumping out at a marina in Canada is considered to be unreasonable. While you're at it, take a look at the muffler/exhaust hose (I didn't know boats had mufflers until I found out the hard way), and the water heater. Any corrosion, wetness? After running the engine, see if you have lots of hot water.
Pull the panel in the qberth and look closely around the shaft seal. Then look up at the ground bus. Is it clean or corroded?
Is there propane on the boat? Is it properly installed, with a detector? You can test the latter with a bbq lighter. Is there a CO detector?
Is there a cabin heater? Test it. Same for any fridge (bring an IR thermometer if you have one), stereo.
Is the stove CNG? If so, you'll probably need to get rid of it. Is the bulkhead aft of the stove saturated with grease?
Look closely at the running rigging. Do the blocks have bearings? If not, you'll have to pay to upgrade. Vang: solid of soft? Lazyjacks? Look at the traveler, those things take a beating.
Is there a whisker pole (boy, those things are expensive!) Is there a spinnaker with all of the gear? I assume the genoa has a furler. Is the furling line led in a sensible way?
Does the boat have a windlass? Installing one is a big, big project.
Run some line through all of the winches. Feel OK?
Is there a signal halyard? Huh? Maybe I better stop.
So that's all I can think of at the moment. Don't get me wrong. I love my E34! Good luck.