I don't think overall market cap is going to change too much in the next months. Maybe it will increase by 30% or so at most. It all depends on bitcoin more than anything.

In terms of the top 10 I can't see much changing. 5 upwards won't move and definitely won't fall out of the top 10, IOTA and DASH might sneak in if they enjoy a little pump but there won't be any surprise entries from out of nowhere.