The WFCO 8955 converter/charger is capable of up to 55A charging. The 55 amps are shared between charging and whatever the house amp demand may be, so keeping lights and such off leaves more for battery charging.
The main limit, however, will be the batteries themselves. They will only accept so many amps/hour and that number decreases as the charge builds up.If you buy a high speed charger to try to force more amps faster, the battery life will be shortened, perhaps greatly.
It can take 12-16 hours to bring a battery back to 100% charge, so when off-grid, most RVers operate with their batteries between 50% and 80% of full charge. Your 8955 will bring a battery 50% back up to 80% in 2-4 hours, but getting from 80% to 100% may take several hours more. The optimal rate of bulk-charge is about 1/4 of the battery capacity in amp-hours, so your 230 AH battery bank can be charged at roughly 230/4 = 57A. That rate is sustained only during the bulk charge phase; once the battery begins to fill up the rate will slow down simply because the battery won't accept a high rate.
Don't discharge much below 50% r battery life will also be be shortened.