Ok I get it....well then I would say that this is not the plan for you.

I would start to reasearch half plans and go from there.
if you are at an 1:10 now are you going to add 10 minutes to your longrun every week? that is what I would do. then I would work my way up to 2.5 hours.
I would be careful with speed work tho. a tempo run would be good for you. If this is your first half then you need to get happy with the distance first.
Benji Durden has a great marthon plan that goes by time. you could take some of his key workouts and use them for your half. His plan starts you out with hills to build leg strength then short tempo runs to build speed. you may need to build your own plan out of it.