Hi Cath and welcome
I don't have a tumble drier - I find that it works for me to make sure I have plenty of nappies to ensure I have enough for a couple of days and then a couple of days while they are drying. My dh has hooked up one of these http://www.argos.co.uk/static/Product/p ... 418554.htm
in our study which will easy take a full load of nappies.
I wouldn't get all of one fabric - microfibre I find bulky and not terribly absorbent, bamboo is slimmer, nicer but does take longer to dry, hemp can be bit stiff and cotton is somewhere between microfibre and bamboo. See here for a good post on nappy fabrics to help viewtopic.php?f=23&t=15576
I used Little Lambs wraps and really liked them, but Motherease wraps are really really good, totally bombproof, just not the cutest designs.
Look forward to chatting and getting to know you