Good suggestions from susitna-flower for getting the ammonia going. The only thing I would differ with at all is waiting 6 months to add your angels. In my opinion, you do not need to wait that long. Once your cycle is complete, you should be good to begin adding fish. Add 2-3 at a time, wait 2-4 weeks to allow the additional
bio-load from the new fish to be absorbed (confirm by testing regularly after adding the fish), then add 2-3 more. Repeat this process until your tank is fully stocked. I added angels to my 55 shortly after it finished cycling, and all are still with me and doing great.