Opinions on tires I am going to buy

[OregonNed]

I'm going to put new rally wheels and new tires on my truck within the next 3 weeks. I discussed tire possibilities with my tire shop yesterday and wheel choices. We talked about 15x8 in the front and 15x10 in the back, but in the end decided on 15x8 front and back. For tires they recommended 235/70/15 for the front and 275/60/15 for the back for a slight rake. Does this tire combo sound good? Most of the research I saw for these back sizes were opposing 255/70/15's in the front. Thanks!