Here are the major components for a 12v system (not MPPT) that would satisfy your group 27 batt and it is easily upgradable for more batt AH as what BFL13 mentioned for 220 AH (just add an identical second panel) :
Panel-
https://www.amazon.com/dp/B07QR9LMGM/?coliid=I2U5Y18TJD0KQB&colid=2ZBKPJ1MXQ6H5&psc=1&ref_=lv_ov_lig_dp_itState-of-the-art integrated PWM Controller & batt monitor-
http://www.bestconverter.com/Trimetric-Battery-Management-System_p_683.html300w invertor-
http://www.bestconverter.com/Samlex-PST-300-12-Pure-Sine-Inverter_p_546.htmlGood luck!