Hello, sorry have been out the last couple of days.
I agree, you want at least 7x turn over for filtration with Cichlids.
A canister/external filter will be your best bet. Cichlids are dirtier than most fish, and require a better filtration system, which the one you is not quite adequate.
So, getting another filter is probably something you want to take into consideration here soon, and try to get one.
Also, for a fish-in cycle, and the tank of your size, you want around 1/3 of your stocking when doing a fish-in cycle.
So, that means, 11 Cichlids is too many a fish-n cycle, and 4 would be more ideal.
The reason this is because your ammonia is going to go up very fast with a larger stocking vs. a smaller one for a fish-in cycle.
BUT, if you are up to do the water changes, as it seems you are, than you should be good.
Keep an eye on the nitrite, if you do not start to see nitrite in a week, you should stop using ammolock. As it might be turning ammonia into an unusable food source for your bacteria, in which case they will die off.
So, look into getting another filter, canister preferably, if not, Aquaclear makes really good HOB filters!
And keep an eye in your nitrite, checking everyday!
-FHM