I was looking at exactly the same kit you are, i have them in my watch list.... im not 100% sure the rear coilovers will fit. Im sure they will be too wide and hit the inner arch.
To be honest even if they didnt fit it wouldnt take too much effort to " make" them fit.
Back in the day when i used to mess around with Vauxhall novas we used to make the rear coilovers fit.
Used to weld extra plates to the bottom shock mount and cut out and turret the rear arches. 2/3 hours welding and they would fit fine.
I ran a full set of Avo coilovers on the nova for 3 years when everyone said the bottom shock mount on the rear wasnt strong enough to take a coilover. I never had a problem.