I received a generic C segment grant last year and was told to look at alternative cars they deemed suitable or have the entry level of the one I wanted which was not suitable. I had to put up a fight to get the generic grant and top up myself more than the 50% they allow. Where as others have received a grant for the full AP for a top of the range car. In my opinion they will want to offer the bare minimum on what information you have put on the application form and to which advisor you get on the day to whether they will offer more. Unfortunately its a case by case situation, but it is defiantly worth applying for.
The Sportage waiting times your looking at the end of the tear depending when you put your order in. There is a thread on here with approximate times.