Some very good points in there. This issue of establishing your range is always a hill to overcome during the initial stages of learning boxing, and even for more experienced guys meeting a new type of opponent (e.g. someone shorter than you with what seems like an unfeasibly long reach) can cause problems. Effective range finding is always something that should be dealt with with very small movements (Scrap's 4" principle is very relevant here, and indeed being at long range and being out of range can often be a difference of only 1".)
I wonder whether these 2 articles might help, one for context and the other as a direct drill to allow practical application (apologies if you've already seen these 2 as I know you take you're Saddo name literally in that you like to study the detail!) In fact, the drill itself does not sound dissimilar to Herb's combative drill re: knife practice.
Finding Your Range in Boxing
Footwork Drill - Boxing Tag
Hope these help mate
Cheers
Fran
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