You can't remove the driveshaft without separating the lower balljoint. I would keep clear of split CV boots they are a bodge and will only last a short time, also you have to keep every thing free of grease when trying to stick them together. I would use genuine parts, they always fit properly, where as some pattern parts are at best good and at worse a waste of money. don't use cable ties to secure the boot to the CV joint, they stretch and the boot will come off the joint when you go to full lock, best to use the metal clip provided.
regards johnwr