Another thought would be to use the engine to charge the house bank and not the new AGM starter battery. Thus eliminating any changes that may be needed to the voltage regulator or alternator. Although I do not think there would be any changes need in the alternator but I am not sure. Do not want to fry the new AGM battery we get.
That would keep us going till we got the rest of the equipment installed. We are just sailing around San Diego currently. So a trickle charger on shore power would keep the starting battery up.
Any thoughts on this plan