advice on rear end

hello 
 
im just after opinions on what i could do to the rear end of my mk2 4 door.   its currently running a series 2 mazda rx7 rear end.  its got a 4.11 ratio,lsd and hardened axles. i like the setup but the problem is its too wide. from hub to hub its just a tad over 1450mm.  this means i cant fit wider wheels to it. 
problem 2 is that its a rx7 stud pattern (front and rear) which is 4x110. these are proving very hard to find wheels for.
 
basically i am wanting to go for a style like this. not a fan of 16's on a escort but they came with the car. the car will be my sunday cruiser once on the road 
 
 
so im after opinions. here is what ive thought so far
get the current rear end cut down to standard escort width (will still have the rx7 stud pattern)
get a stock escort rear end and fit (will then have to get lsd,axle's ect but will have 4x108 stud pattern)
fit another rear end (open to suggestions)
would love to go for a serious rear end but out of the question at the moment
 
its got rx7 front brakes/hubs too but on a escort strut so changing that back will be easy.
not sure if escort axles will fit the rx7 diff.
 
i dont mind keeping the stud pattern if i can find the right wheels, but there is far better range in a 4x108
 
here is what it looks like



 
and when i fitted a standard escort offset 15x7 to the rear ( physically fits over the studs but dosnt line up correctly, can get 1 wheel nut on)


 
all opinions welcome
cheers

I run an rx3 axle case with rx7 lsd and "E" van crown wheel & pinion for the ratio I wanted. the rx3 splines will fit the rx7 lsd planet gear and the axle width is a bugs willy close to escort width, just need to weld escort size spring saddles in place on tube.  1/2 shaft flange can be drilled to 108 escort pcd in between the mazda pcd holes. You can make up disc brake caliper mount bracket or purchase Paul Dunstan's kit for skyline caliper and use top hat disc from Audi to fit over the escort pcd studs you just fitted. I have used this set up since 1999 and subjected to lots of bad driving!!

thanks hendo, ill look into that too.
 
cheers