I doubt you need any solar at all if you have a 740AH battery bank and are gone for two weeks or fewer days. You will get home in time to do a 100% there. If you run a bit low for comfort, you still have your gen /charger while camping to put a few AH back in to get back to comfort level. You don't need to keep the SOC very high for that time period, as the batts will recover to full SG back home.
IAW, IMO (subject to Mex saying otherwise), two weeks at below full will not create permanent sulfation.
When camping off grid for longer periods than two weeks, you cross the line somewhere in time that you go too long without a full recharge. I don't know how long that is. I do know that with "some solar" you can postpone that time by keeping the batts at a higher SOC most days. You do need one 100% recharge every month even if your solar appears to get you to "full" most days. Just ask my batteries about that!
Getting some solar anyway despite the above excellent reasoning, is just for your amusement and for bragging rights that you have some solar. (Which is allowed as a guy thing) :)