You will find it really hard to express colostrum into a bottle as you don't tend to have a huge amount of it. Personally I would put bub to the breast as they will be much more efficient at getting the colostrum out than any pump will ever be and then use the bottle after a few days. No matter how you get the colostrum out, you will still get that initial feeling of milk coming in, but it will settle reasonably quickly if you no longer feed from the breast.