Timing a "unknown camed" engine....

the mallory instruction sheet is the same like the accel one..only the accel one uses a Silver and Brown spring as stock set up.... the curve purple orange would be fine....but all the curves start very fast within 500-800 rpm and my idle is 900 rpm...so I think I have to bent the perches...to raise the begin of the curve
I will try to set my idle @ 16-18 deg.... and then 16-18 deg. advance on top.... I think I have a old Ford dizzy layin around..perhaps I can use those springs also...

Greetings Juergen