Small three view + statistics on
http://www.raravia.com/princess.htm
It's in italian but I'm sure you'll guess what it means.
That is some prototype for a model with 66.9 metres span and ten engines (four contra rotating sets and two singles).
It has a good wingspan and quite narrow fuselage, if a little tall, so I expect it would fly OK. Stories of the first test flight said the original really wanted to fly.
Some people have made glider models, for example see the PSSA web site in the UK.
www.pssaonline.co.uk/designer-tech/ DES%20-%20Saunders%20Roe%20SR45%20by%20George%20Dexter.ht m
good luck
Jerry