bear in mind that even if you have enough cooling towers to hold all of the microcycles, adding more cooling towers will still increase your effective eu/t as you can run the reactor more often, up until th epoint that you can run it constantly. In my current game I am building a setupp with four single chamber, 8 quad uranium celled reactors, with 64 cooling towers. It is certainly a large build.
Quasi-true, depending on the setup.
The 'optimal' or maximum amount of cooling towers useful to you would be dividing your cooling cycle time and dividing it by your micro-cycle time. You'd probably want to round up from there.
For this setup, your micro-cycle time would be approximately 175 seconds, with a cooldown time of approximately 5k seconds (if we are being conservative and only taking into consideration the 12 cooling per cell ones on the edges rather than the 16/cell) for around 10 towers total (it calculates out to around 27-29 micro-cycles per cooling cycle, and each tower can handle three such micro-cycles).
Therefore, for four of them, you'd only need 40 at most. 64 is overcooling by over 50%. You could put another two generating reactors in there easily, possibly a third, depending on how the fractions work out with the internal cell slots.