Hi Paul,
RE:" If i got say a Lumicon Giant Easy Guider but used it on my alt az mount. Would i still get field rotation if i kept the guide star centered?"
1. Yes! You will get field rotation in the image whether or not you used a guider and this does not apply to your 'scope only the type of tracking - Alt-Az tracking.
2. The guider you mentioned is also called a "Off Axis Guider" and can be quite frustrating to use. Best steer clear of these for the time being.
3. Try using a wedge and polar alignment and tracking to start off with then look at guiding.
4. Moon too bright? Stop the scope down with an off centre mask.
5. Good attempt on your pic - may need some practice at focusing
Good luck,
Jerry.