you sure know how to pick the challenging designs, neurotex

i assume this is the one based off the S-37?
i ran across a thread not long ago that was talking about canards, someone mentioned that the canard wing should be near the stall point for its angle of attack, for more autostability when/if it stalls out. plus, with a more forward CG, it makes it a bit more stable as well. although, stalling might not even be an issue with its forward swept main wings.
you should build a real basic balsa or foam chucker, so you can adjust the angles without having to worry about messing up the finished product (or losing all the time you invested in the finished product). if the balsa/foam chucker gets trimmed well enough, you could just stick in some AA electronics and then work out the thrust angles. once all that is done, you can just copy it and put it all to work on the finall build.
i'd start with the elevator at 0, with the main wings at 0 as well, and then have the canards at 3 degrees positive (who knows what the needed angle would be). with everything else at 0 except the canards, you wouldnt have as many variables to deal with all at once. if you find a sweet spot, then you could use the elevator to really tune it in for a better climb rate or more flat glides. i dont know if you bookmarked this link, but you had posted it a while ago, it might prove usefull in finding the CG:
http://adamone.rchomepage.com/cg_canard.htm
nick