Please note solar panel output ratings are tested at 68 Deg with exposure to one sun. Thats the equivalent of noon on the equator with the sun directly overhead (1000 watts per meter squared).
It would be very rare for a panel to produce rated output, but it does happen. It can actually produce more then rated output under curtain conditions but again I would not count on it.
30 amps at 13.5 volts is 405 watts so a 30 amp charger
should work fine but will limit future expansion. An mppt controller is not required if your panels have a max power voltage of 17.5 volts or less. A pwm controller will work but you will not get full power potential, the panel voltage will be pulled down to near battery
voltage. ( IE panel rated at 200 watts with max power voltage of 17.6 and max current of 11.4 amps will only put out 154 watts at 13.5 volts) With a good mppt controller (beware of cheep Chinese mppt controllers) you will get 14.8 amps at rated output, again not likely.
Have I totally confused you yet?