Your water should be fine because it has no fish in it. Ph is better at 7n but 6.5 is ok. You won't have any nitrite/nitrate problems at the mo because there are no fish in there which causes the levels to rise.
Only add one or two fish and then after a week or so test your water if its okay and none of the nitrate/nitrite levels have risen then it's safe to add a couple more fish. DO NOT ADD LOTS OF FISH AT ONCE THEY WILL 100% DIE.
When you have a new tank it takes a while for things to settle down. I take it you have added bacteria, if not you need to when you add your fish or before if possible. This bacteria is essential in any fish tank of any kind. It's what breaks down your nitrite/nitrate to safe levels. Without it your levels will shoot up sky high and you will lose all your fish.
Fish waste breaks down into nitrite/nitrate. If the nitrite levels get to high, it will start to produce ammonia in your tank which is fatal.
Make sure you have a good filter in there and be careful with the black moors and orandas, because they are maufactured to look the way they do they are suspetible to swim bladder (where they float on the top of your water of sink to the bottom and stay there, often upside down) Make sure you feed them some bloodworm every now and again, this will stop them getting constipated which can sometimes be a cause of swimbladder.
Make sure you do regular water changes, once a week for the first six weeks and then every other week after that. Syphon off a quarter of the water each time FROM THE BOTTOM OF THE TANK. This is where most of the waste lies. Clean filter sponges in OLD WATER that you take out of your tank as opposed to washing the sponges in new tap water, which will kill the bacteria that you are trying to grow.
After a while the bacteria will grow itself but you will always need to add some with every water change to balance out the bacteria that you've lost when you've put in new tap water. Also don't forget to add dechlorinator, this is important, putting a fish into water that hasn't be dechlorinated will burn your fish, leaving them open to other infections.
Try and do your water changes on a weekday. The water companies add more chlorine on the weekends.
If you need anymore info just email me, i hope this has been of some help to you