Too bad Sig doesn't make a 60 size version of the SE.
there are a few 60 sized planes, but I don't think there is realy an equivalent to the SE.

The Ultrastick 60 might do nicely

Might be a good idea to consider a 90 for it. most 40 sized planes fly better with a 46 - 50 on board. most 60 size planes are a blast with a 90. Supertiger 90 is a popular choice. if it is too much for you at first, simply keep the throtle down.