Hi Rachelyn and welcome to the forums!
You have certainly come to the right place as you will find all you need to know on budgie care here.
The best advice really is to browse through the forums for all the pertinent information on the several articles and sticky threads found at the top part of each section of Talk Budgies.
Those chicks are familiar to me, it seems your father has also posted on them here: https://talkbudgies.com/determining-g...parakeets.html
From those latest pics you posted, your budgies are likely two girls.
But time will surely tell, especially when the colours on the cere set in more.
In most cases when the budgies reach 4 - 5 weeks old it will be easier to tell.
When looking at the cere colours in person (not from a photo) gender can even be identified a bit sooner and depending on the parents genes, gender in some chicks can be determined right after hatching.
Also when you get to know your budgies, it will be easier for you to come up with names.