I personally would choose short trip now and maybe another short trip later. As another very wise Diser posted, two 6 day trips is more than the one 10-day trip--6 x 2 = 12 and 12 > 10 (sorry the math teacher in me is coming out). 
I have stayed at moderate hotels (CB, POR, POFQ) and even once at DVC (OKW) and have never felt as though I am "missing" any of the Dinsey magic.
Look into buying points for DVC. We did this two years ago with OKW studio--peak season--July and got 5 nights for $540. The room was much larger than a standard room at value or moderate, had a large bathroom, and a kitchette (microwave, frig, toaster, sink and counter for preparations). I have never stayed at Poly so I can't compare to its size. The kitchette saved us lots of money by eating breakfast in our rooms ($40-50 a day) and having a place to store snacks to bring inside the parks (with water $2 - $2.50 a bottle, we saved over $10 a day with just bringin go ur own water). 
We are staying at POP this December
(7 nights) so I could save money on room costs so we could do more during our trip--MVMCP, DDP (have always wanted to try some of Disney's table service meals, but thought they were greatly overpriced), sleigh rides, etc.
As stated before, I would choose NOW and maybe later, because you never know what will happen within the next year and then no trip at all.
I have stayed at moderate hotels (CB, POR, POFQ) and even once at DVC (OKW) and have never felt as though I am "missing" any of the Dinsey magic.
Look into buying points for DVC. We did this two years ago with OKW studio--peak season--July and got 5 nights for $540. The room was much larger than a standard room at value or moderate, had a large bathroom, and a kitchette (microwave, frig, toaster, sink and counter for preparations). I have never stayed at Poly so I can't compare to its size. The kitchette saved us lots of money by eating breakfast in our rooms ($40-50 a day) and having a place to store snacks to bring inside the parks (with water $2 - $2.50 a bottle, we saved over $10 a day with just bringin go ur own water). We are staying at POP this December
(7 nights) so I could save money on room costs so we could do more during our trip--MVMCP, DDP (have always wanted to try some of Disney's table service meals, but thought they were greatly overpriced), sleigh rides, etc. As stated before, I would choose NOW and maybe later, because you never know what will happen within the next year and then no trip at all.
