Hi,
I've just started with a very similar sized tank (70L) to you. Its been fun so far, fishy stuff takes up about 80% of my free time. I used TetraAqua 'SafeStart' which my LFS informed me I could put half my full tank of fish in pretty quick. Its been a 5 weeks now and everythings been fine. But just got an outbreak of 'Ich' (whitespot), which i'm treating.
Hope you having fun.
Oops, I didnt mention what i'd actually replied for. Neon tetra are great, they were the first fish i got, they've put up with all my mistakes. I'm recommend them for any newbie. Plus that looks cool when they swim together.
Think thats me done now.........