In reply to paul walters: I would recommend the g12 crampons, used them myself for the same trip + a winter skills trip in glencoe in January.
And depending on fit of you foot I would say either scrapa manta, a solo alpinist, or other boots in the b2 rated catagory. But if your looking at doing some ice or mixed climbing in the future go for a b3 rated boot now, more to pay now but one pair will do well. In which case the sportiva boots mentioned above are excellent, I also highly recommend the scrapa phantom guides. These also have the advantage of built in gaters.
Best thing to do, go to some main shops like Cotswold outdoor, Ellis Brigham, snow and rock. Get a boot fitting. A good shop will measure ur feet and recommend a boot or ur foot profile and what ur doing/ plan on doing in the future. Also make sure you invest in some good quality socks, smart wool or bridge sale are my favourite