I agree-8 to 8.5:1 should be good for a street motor. But it is not going to be street if he is getting is it set up for race gas(?). It does sound like it will be on the wild side. If so, and he does not care about street driving maybe the builder and cam makers (and tuners!) advice is something to consider.
97 Laser Red GT-248A Wingless model, Built Lincoln Mark VIII motor-Procharger D1SC, 3 core IC
2012 Black GT-Saddle, 3.73s, Brembos, Shaker1000