First of all, don't book with Virgin YET. Usually, booking with Disney directly is much cheaper. They will release their holidays around April and you don't want to overpay! You never know what the deals will be, but Disney have consistently been cheaper over the last 3 years. For our trip this year, we booked early and got 14 for the price of 7 tickets, full
DDP, $200 gift card and 35% off our hotel rate (at SSR).
To answer your question on POR vs POFQ, we have stayed at POR but my in-laws who met us there stayed at POFQ so we spent a lot of time over there. It really depends on personal taste. POR is much bigger, busier and has more going on. POFQ is the smallest resort at WDW, it's quieter and has less going on. Both are nice resorts, POR is a really pretty resort and has a slightly better food court. Either one is nice and perfectly adequate.
With a 14 and 7 year old, I'd probably go for POR purely because there are more pools and stuff for the kids.