At the risk of being labeled boring ... I offer the following insights for yotie consideration if he chooses to chase this set of BTW ...
Please be mindful that 99.99% of collectors out there are unaware of
quality strike BTW ... and this gives you a great advantage to actually assemble (cherrypick) a quality set ... at no additional cost ... if you have the patience to do so.
By quality I am referring to visual appeal and fullness of strike ... not grade. Quality coins can be found in AU50 as well as high MS ... and there are tons of MS BTW out there lacking
quality.
Most BTW can be found with minimal toning ... so blotchy toned eye appeal is not normally the issue for collector grade coins.
The big difference that distinguishes a quality BTW is the fullness of strike.
Nearly all BTW are weakly struck ... and the weakness always shows on the obverse portrait of Mr. BTW himself. Note in particular the cheeks and area from nose down to his neck ... weakness of strike shows as original planchet marks that were not removed as metal failed to fill that high point of the design during strike.
I humbly suggest that for no additional cost ... but some time and patience ... you can find a full set of quality strike BTW ... the key is knowing what to look for.
Truly hoping my post is not an imposition or burden ... not trying to impose my standards on anyone ... just sharing in the hope this is helpful as an insight.

Looking forward to seeing whatever you choose!
David
Take a look at my other hobby ...
http://www.jk-dk.art