Great lot- you'll get excellent money for the megan's place! Yours looks to be not only complete, but in suburb shape.
The aqua heart brush is even there! (it's super hard to find, I've been offered $30 to give up mine from that set! for just that brush alone)
Megan's place:
white and pink puppy (snowball)
Aqua heart brush
pink bed
blanket
6 white fences
1 pink "A" frame jump
1 Pole jump (3 pieces)
2 white flower boxes
2 white shelves
3 pink award ribbons
3 trophy cups
It could come with, or without Megan & Sundance. which version of the playset you got was printed on the box.
Megan and Sundance set:
megan doll with dress, panties and pink bow shoes. wide pink hair ribbon
Sundance with satin turquoise ribbon, and pink floral bridle.
-blue comb and blue flower brush
All the pieces you have pictured with the
dream castle belong to that set- also included with the set: (I see these in your other pictures) -blue piece + 4 yellow horse shoes. The blue piece is a shoebox and the shoes each fit inside. The golden yellow star brush and purple cape also goes to the dream castle.
I suggest checking out mylittlewiki. Most of your ponies are from 83-86' you do have one from 88' the little boy pony, Paws with his bandana and orange race car comb.