What do you want to run with the battery ? 12v or more standard 120v items? It seems like most of these systems lean heavy to the inverter/120v side when you use 12v for most stuff. You are getting lots of inverter and not much battery for the size. Would you just re-charge after the weekend or use solar and alternator while out?
I opted to go 12v exclusively and that allows me to really simplify the power box. It also does not convert the power to 12v or 120v so you get a little more efficiently. Bonus is you can fit a much larger battery with less electronics and If needed a stand alone inverter can be used of required.