hiya misterbenn,
Those panels you have are 24 volt nominal and I wouldn't worry about the 2 volt difference. So by putting them in parrallel will be the go. DONT use car batteries as they wont last long at all what you need is deep cycle batteries with a reasonable A/H(amp/hour) rating.
I.E.
1. My house batterybank is 12-2 volt 600A/H sonnenschein batteries hooked up in series to provide 24 volts
2. My shed battery arrays are 28-6 volt 110A/H hooked up in series/parrallel to provide 24 volts and 24-2 volt 275 A/H hooked up in 2 arrays of 12 batteries to provide 24 volts.
I wont bother mentioning my other arrays as they are different voltages.
That 150 watt inverter is only a toy so go for something atleast 2kw sinewave with a 5kw surge minimum.
My house inverter is a selectronic 24 volt 2.4kw with a 7kw surge pure sinewave and the main shed inverter is a kipoint 3kw with a 9kw surge pure sinewave.
I'll find the link to the charge/dump controller in the next few days for you but I have to ask my mate who designed it if I can put it on this forum.
As you can see from what I have mentioned above you need a decent deep cycle battery bank to provide any reasonable amount of RE power and although your panels will provide some charging power I'd suggest a home made wind generator to help charge the batteries. Checkout the sticky in ths forum and the backshed link is a forum and website where you can use a fisher&paykel washing machine motor and convert it into a wind generator.
Just make sure you do a heap of research first and dont just dive in on the first aparant bargin. RE power can be affordable if you can find good secondhand batteries cheap and your part of the way there with those solar panels.
Cheers Bryan