You are still reading Revelation in linear mode. It is a collection of visions where some sequences can be found. But the way you are describing it, we would have to expect the mountains and islands to be moved away twice and on and on.The 6th Seal cannot be the 7th Trumpet, because there is still the 7th Seal. Also there are 6 Trumpets and 7 Thunders to go through before the 7th Trumpet.
The wedding attire was given at the 5th Seal. The church is and remains in Paradise. The Kingdom on earth for 1000 years does not empty Paradise. The sheep and wheat populate the earth. There is no part of the body or church left on earth, nor split from Paradise.
The wedding attire is specifically written in Rev. 19, period. the fifth seal main subject matter is martyrs.
Also you cannot get away with simply naming believers sheep and wheat in order to somehow declare that their treatment will be different from ALL believers. Saying that believers will not receive ALL that the Gospel provides for ALL believers is...another gospel.