The Oatmeal Savage at www.oatmealsavage.com has good Haggis, he can help you work out how much Haggis you will need for your group. He ships the Haggis frozen in an insulated container. My minister who is from Scotland, says it is good, I'll go with his opinion as I really have no personal basis of comparison.

Be sure and have plenty of Single Malt available, you are going to drink a lot of toasts at a Burns Supper, that takes a lot of Single Malt. You can have a lot of fun with the Toast to the Laddies and the Toast to the Lassies.