If you're releasing this by yourself, 1000 copies is a lot, you can sell maybe 200-300 directly to customers and rest of them have to be distributed to other sellers. The fact is, that these days 95% of the labels only do trades instead of buying wholesale, so prepare to start a distro and have extra cash to postages for trading.
However, I think it's much smarter to release it as 1000 on real cd, than 150 on CDr.
And what I said will apply to any "new" band without without a big-name members.