Ah, a bit of clarification on the sam's bat thing. The brochure covered a nascar bat on one side ($105.00) and the marine deep cycle on the other ($125.00).
I'm going for the big one for several reasons. I need the weight in the back to help balance the a/c in the front (am also hanging the spare underneath the back end). The tongue weight has gotten a bit porky... I also want the extra power... The optima d51, 26#, 42 a/h is $107.00 plus shipping (again, I assume they charge for shipping). So, I get the added weight (who woulda thought I'd want more?) and extra run time.....
Am planning the battery box set up to include the new 500 watt invertor (sam's for $27.00), bat charger, etc.....
I snowblowed the drive way and it is now bone dry. The sun is getting higher and I may yet survive another crappy winter.....