Clutch problem will be the push rod on the slave cylinder is too long. Keeping pressure on the fork all the time. I had this issue with my ORC twin plate. It's a simple check, get under the car and grab the clutch fork, I'm assuming its a jap push type clutch. You should have a few mm movement on the fork either way. If its a tight fit with little to no movement, that's your problem.
The smoke from the second turbo will be the turbo oil seals, without a doubt. I would say, have the valve stem seals done, the turbos have to come off to remove the head anyways, as does the timing belt. Get yourself a good set of 2nd hand turbos and do it all at once. You'd be mad not to, or you'll end up paying twice to have the turbos removed and it's not an easy job.