do it - if the plane is reasonable weight and you have decent power -it will be just fine -get the CG such that it is not too sensitive for your own taste and away you go -
If the theories don't make sense -it is usually because they are really not so.
FWIW the shape of the airfoil on your model bipe means very little. it can be a 12% fully symmetrical or a 12% Clark Y or a 2412 series etc. and if the wings are straight and true and equal - I defy you to tell which is best .
Why? wing area and loading are the same in these three examples and if you set AOA equally -they will all fly about the same -even inverted .
On a full sized bipe - yes there is a difference --the airfoils and angles were all developed to get best performance at a specific task - be it weight /speed or very broad speed range etc..