SFS best tip out the three, well 4 I have had, OEM, Forge, B5 V1 and now SFS. Best fit, so easy to fit and the best the car has driven. That's my experience from each product, car has never felt better. It's £120 too. Also on same rollers made most power/torque out of the lot.
On the front mount I'm with Ronin, get one before mapping. Get everything in place and go stage 2/custom it's not worth getting a generic stage 1 for a car will a full turbo back exhaust and higher flow intake mods such as 80mm tip air filter etc... A generic stage 1 might cause the car to run a bit odd as we've seen in the past with JamJay's. Also don't get a budget FMIC IMO, buy cheap buy twice. I have done this... But now have a proper one which will never leak and is a superb fitment. It's also big and stealthy, lol
Ducting, neoprene 80mm stuff seems good.. I've never bothered with an air feed though, I think the difference it makes is barely noticeable but I may be wrong.. Can't see my car getting much more airflow from one personally.
http://www.ebay.co.uk/sch/i.html?_trksid=p5197.m570.l1313&_nkw=80mm+cold+air+feed&_sacat=0