Yellow Monster, there is already an AIP entry - but it doesn't say quite the same as you have.
Here's the AIP entry (I think you have to log in to the site first to view it).
Wingspan limits for the various stands are in para 1 of AD 2.9 (although there's a bit more of relevance in para 5). Then go to AD 2.20 para 2 b) - of particular note is the statement that pilots should use the taxilane as directed by the Ground Movement controller.
So, we have an engineer who is unsure whether it's OK to use any particular route, ATC who don't issue instructions that the AIP says they will (and seem to think that you'll know what to do anyway) and repeated disclaimers that it is the pilot's responsibility not to take an aircraft anywhere there isn't room!
An amendment to the AIP may help but it sounds a bit of a mess!
I must stress that I mean no disrespect to eng123 who has, at least, asked when in doubt, but it is surprising that with so many width restrictions that training doesn't cover this kind of important topic....