Posted: 27/07/2014 at 14:37
Plenty don't use tri suits and do just fine. I'd not bother for your first as it's pool, just chuck a shirt and shorts over the top of your trunks. The Btwin kit gets very good reviews and is cheap as tri kit goes - you'll get people who will say it'll make a difference what you wear but I personally think it's what you do rather than what you have that's more important, certainly at this level.
Don't worry too much about the bike - unless you've gone out and spent ??12k on your first one I'm sure you'll be just fine. Pedals wise, you'll probably fall but you'll almost definitely be fine after so don't dwell on it. Try holding yourself up in a doorway to practise clipping in/out (assuming you've not got a turbo at this stage). Likewise with shoes, the difference is mainly speed of getting them on/off, support and comfort for cycling without socks. If you're getting just one pair at this stage you might want to think about getting tri shoes but if you're likely to use them for lots of commuting, say, you might be better with a road set for that.
Good luck, enjoy.