I understand that, just saying that you can spend the effort of making cuttings of syriacus or instead make cuttings of something readily available that will be more conducive to bonsai techniques and will give you more enjoyment. Juniper, maple, elm, privet, thuja, linden all are easily grown from cuttings and will be more enjoyable for your effort. I'm not saying dont try cuttings of syriacus... but add some variety now.
Anyway, good luck and enjoy the process! Trust me, I am not the one around here who will tell you not to take your time or not to spend time with material which is not known to be good for the craft, but I will tell you that you don't want to load up on material which will take up space for more enjoyable and resilient species.