I have a Magnum 61 four stroke and it spins a Master Airscrew Scimitar 12x6 @ 10k (sustained not peak).
Using a digital fish scale this produces 5lb 5oz of static thrust.
When flying a plane I judge this engine to be barely the equivalent to a Thunder Tiger 46pro.
Hope this helps at least a little bit.
Depending on your flying style, if you can keep the weight to Sig's estimate of 4.25 - 4.75lbs you should be OK.