Go with the Falken's.
Up front, use a 235/40-17 on a 17" x 8.0" wheel (5.375" BS, 5x114.5 PCD and 62mm CB). On the rear, use the 295/40-18" on an 18" x 11.0" wheel (6.5" BS, 5x114.3 PCD and 62mm CB). It really is OK to use a 335/30-18 but as the 295 is 12" wide, it will be fine too. You could put the 295 on a 10" wheel but the 11" gives you more flexibility with tire choices in the future (or when you go to a Pantera event, see all those 335's on 11" wheels and change your mind!).
Two things to keep in mind: check your brake caliper clearance. The closer you can come to that spec, the thinner the center your wheel manufacturer can use, which means a deeper dish. Also, at the front, measure the distance from the wheel mounting surface to the end of the spindle. Your wheel manufacturer will want to make sure the grease cap fits under the center cap. No concerns at the rear.
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