5-day Park Hopper tickets will run about $280-300 per person, based on age. I like to over budget, so lets say everyone is over the age of 9, and will need adult tickets. If you're staying 8 days, you'd need a 5-day and a 3-day per person. Those 3-days are $260 per adult (a little less for kids 9 and under, but like I said, I tend to over-budget). Remember, these are for 4 adult park hopper tickets. Children 9 and under are less expensive, or 1-park-per-day tickets (which would be totally reasonable in your case, I think, since you will have plenty of time in each park; 1-day-per-park tickets would lower this by about $140).
There will be at least 2 ticket price increases between now and July 2015. I would budget $500 per person for 5 day hoppers to be on the safe side. Also, it's been a few years, but Disney used to raise the cost of concessions yearly. They just increased prices in the Blue Bayou menu. With no new major overhaul like DCA 2012, I would plan on $10 per person covering counter service meals in 2 years either.
OP asked about 3 days in DL, in which case they should consider switching hotels and only staying DL adjacent for 3 days. There is an Embassy Suites, it was offered as the official hotel for CHOC Walk, and we were quoted 40 min - 1 hr for the shuttle. Doable if you plan, but each family has to consider the value of the savings. I still think $6000 for 10 days in So Cal might be stretching it in 2015. The problem is there are no steep discounts to be had by planning so early.
). Remember, these are for 4 adult park hopper tickets. Children 9 and under are less expensive, or 1-park-per-day tickets (which would be totally reasonable in your case, I think, since you will have plenty of time in each park; 1-day-per-park tickets would lower this by about $140).

Like you, we are including San Diego in the mix. We are staying 7 nights in Anaheim and 2 nights in San Diego. We went to Anaheim and San Diego last year. There are few things we learned that we're trying differently this trip.
At least for our flights.
