Waymaster 30 tyres on 1947 Rover P2

[DaveHRov14P2]

Hello, I am currently trying to firm up on the replacement tyres ( all five) for my 1947 Rover 14 P2 project. Based on my research and trying to match original tread pattern, width and diameter I have arrived at two options these being, Waymaster 30 525/550 -17, and Avon Supreme 525/550 - 17.
However the Avon is currently not available and currently there is no forecast or even certainty if or when it may be available.
So that leaves the Waymaster 30 as my only choice. So the question is does anyone have any experience / feedback on running these tyres on a similar P2. Thanks for the help and as always much appreciated.