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Ouch! That is an interesting thought with the long stroke. Even if it clears fine on the engine stand, it might not clear at 7000 rpm when the crank starts to move around.

For the OP, I wouldn't use a bargain basement crank in a big power motor. Better spend the money for the good stuff if you want it to make power and live.

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I cracked an Ohio 4.15 large rod bearing crank at 100 passes. No detonation, or other problems. I now have a $2300 Crower in it. I could have saved myself a bunch of $$ had I done it right the first time. If it were me, I would stay at 4 5/8 stroke or less, Biggest heads I could afford.