Practice race pace in training - set out for a 6 or 7 mile run and try to do the first in 9:08, the second in 9:06, the third in 9:04 and so on. If you don't have a garmin or whatever, use gmaps-pedometer.com to work out where the "mile markers" are on your route and use a regular watch. A couple of those and you'll be so much more confident.
Pacers are human too so you'll be better off if you can pace yourself - they are normally much faster than the time they're pacing for so if they mess up and go out 15 secs a mile too fast, *they* can make up the time, but the people following them might not be able to!
Take a look at videos of Paula Radcliffe, Steve Way or Priscah Jeptoo, and consider that clearly your style not only is working fine so far, but also your friends can pick you out at a distance, which is always useful!
Can do but depending on how you would recover you might want to do very little running at all for 2-4 days after that last long run and then take care to recover properly from the other runs you do after that.
There is a lot of stuff going round this year HRR :/
It drives you bonkers doesn't it? I was going (honest) to do 10 miles last night but realized the OH was out that evening, and the dogs had been very good and not destroyed anything, so I decided to stay in with them to see if we could have a whole day of good behaviour. Forgetting that we're going to a concert with my Mum tonight so I won't be able to run this evening. Oops. Oh well.