not a bother at all pears and i certainly agree.. keep it away from trade fairs for now
regarding own colours, depends on the supplier, if the fabric is cheap there may be a 1000meters minimum but you may hit even a 50meters minimum if you work with expensive fabrics.
dont feel nervous for the fabric fair, try to 'take it all in' during the first day, if there are forums browse twice or more, note fabrics and fabric houses you find interesting, take lots and lots of notes, and on second & third day, visit the manufacturer's booths.
*Dont put orders straight away but only for those special fabrics that completly 'take your breath away' sampling order could be anything from 10-50 meters, for special fabrics a 50 meters order may well take you in production without needing to re-order later.
*Place final orders on the last day
*for fabrics that you are not secure/sure if you will use, ask the fabric houses to supply you with type and colourcards by mail in order to co-ordinate your collection
*make sure you have bussiness cards with the name and details of your start-up company, this is essensial.
*best way to work, is to stick with one or two fabric houses and order everything from there, this will help you built in a 'trust' and lasting relationship
feel free to ask all the questions you need, i'm always glad helping out new designers