Glenshee is a great run in our cars, but weigh up the southern section through the swoops on your suspension before you really give it stick. I am OK on the Hoffman Nitrons, 550/750lbs, but I was behind Scotty once when he put his rear suspension through the top mounts on his Elise. You should be OK on the Exige though
Rain pretty much goes over the top above 70 as long as it is not torrential. Tuck an umbrella behind the seats for when you get stuck at lights. Quite a few of the guys have gone topless as for some of us it spoils the motoring being enclosed in.
Just wondering how long it will be before you start adding on the extra power, but make sure that you can handle as is first.
tut
ps I can vouch that it has been well looked after, it was up at Ricky's yesterday.