Stroker cam suggestion

Hi,
I'm in need of a cam for my 505 stroker (TF 240 heads) and have narrowed it down to a solid flat tappet cam in the 245-250 @ .050 range (street car, 3.33 rear gears, 4-speed). Talked to Dwayne Porter and he suggested a straight pattern Comp Cams XTQ lobe (278 adv., 248 @.050, 160 @.200, .566 lift (I want to run 1.6 rockers) on a 110 or 111 LSA. Choice is based on low/mid range torque (4000lbs street car), street manners and longevity.
Other suggestions were to run a tighter LSA of 108. Since I run power brakes and don't want too much smell at idle I thought about going slightly smaller if I run a tighter LSA and found the following lobe: FL276 (276 adv., 247 @.050, 161 @.200, .586 lift). This lobe is slightly more aggressive (29 vs. 30 degrees from advertised to .050 and 86 vs. 88 deg. from .050 to .200) but with a lower duration. If ground on a 108 LSA overlap is 60 degrees (vs. 58 with the first cam - 110 LSA).
Which of these two cams would you choose? Are the FL (Ford) lobes too aggressive for longevity and street duty?
Thanks