Jills, this might be helpful
Cross post your query into the "Budget Board" and "Orlando Hotels and Attractions" noting specifically your target budget amount. Someone might have some creative ideas there are for example know that one of the non-Disney properties located in Downtown Disney would work out.
Another approach as follows which gets you close to your $1500 lodging budget but is not perfect and may be too disruptive considering your special circumstances:
Rent via
DVC Board Points, a 2 Bedroom at OKW for your 10/5 Sunday night and to leave Friday 10/10 - this would be:
Sunday/Monday/Tuesday/Wednesday/Thursday - 5 nights in a Two Bedroom at 24 pts a night for 120 pts total - typical going rate is $10 a point so that would be $1200
Saturday 10/4 and Friday 10/10 - since points so high with DVC it would bust your budget - need two rooms at perhaps the All Stars but need to tell Disney since you have a special and blessed child that you need guaranteed ground floor rooms which they would do for you as long as they know. The rack rates for this period are $99/room/night so you would be looking at $400 (+ 12%tax) here for rack rates - good likelihood of being able to get discounts though. Get a mini Fridge for one of the rooms at $10 per night
However this would mean in essence three places staying over 7 nights which could be really tough but does keep you on Disney property at about the $1600 range assuming no discounts on All Stars
Also your location - if you are a Florida resident you might be able to get lower rates at the All Stars
Not a perfect solution but might be helpful
Thanks
Jason