Hello FishyNewbie, and welcome to the forums!
If your readings are correct it would tell me that the cycle is close to complete with the ammonia already under control, and the nitrite fairly low. The fact that the nitrates are higher than the nitrite (and at 5 ppm the nitrates are
very low - thats a good thing

) is a strong indicator that the bacterial colonies that convert these nitrites into nitrates is well on its way to being established. Knowing that the fish have been in the tank during this time is kind of scary, but it also tells me that the bacterial populations have adjusted themselves to the full load that the tank is going to be seeing right away. It is a 50/50 chance whether or not any of your inhabitants will perish due to the stress and hard to tell until the scale tips in either direction.
As far as the fry go - isn't it great to watch babies grow in your tank?? I shall name them all squishy, and they will be my little squishies!

- any of the adult fish will eat them if the opportunity presents itself, even the parents, and especially the gourammi. Having some plant matter floating at the top of the tank will give them some refuge, but a better idea would be to isolate them in a seperate tank until they are grown enough to fend for themselves.
Go ahead and start trying to feed them. Do not feed them a lot at once, just a little several times throughout the day. Regular flake food will do just fine. Grind it up between your fingers until it is a fine dust consistancy and sprinkle it into the tank. If it is fine enough then the adults will ignore it and the fry will gravitate towards it and it will fit into their little mouths.
HTH, let us know if you have any other concerns, and Good Luck!