Settling Mail Order Eggs

I am sorry if this question is redundant, but I just want to make sure my new eggs are off to a good start.
I ordered 6 Jersey Giant eggs and received them today via Express Mail. They are now in my oven (no pilot light) settling down. My question is:
I am expecting another order of 4 White Jersey Giant eggs on Monday...is it a bad idea to keep my other JG eggs out to settle longer in order to incubate the whole lot at one time?
I am still working with my Whole Foods' eggs, I know there is developlment in at least 5...but no movement, except for a little pulsating from one.
If all goes well, I will have 10 JG and 1 Whole Foods' chicks (Isa Brown)....
Also, has anybody ever had a baby roo made into a capon? I don't like the idea of having to get rid of roosters just because of their crowing (LA city ordinance) and my realtor is looking for a 1 acre property in the area where I live, but until then....it's either freezer (somebody else's), farm sanctuary (all full right now) or caponizing him.

Any ideas?

TIA,

~Vickie