I'm damn near shiny new to agar. When I started growing many moons ago, agar work was reserved for the most advanced clandestine mycologists, so my input here is worth less than a grain of salt.
The idea is to start on agar with any new genetics, period. Print, spore syringe, LC syringe, don't trust em at all. Especially prints and spore syringes (I'm dealing with the proof of that logic now). Once you get a clean culture (no contamination, especially bacterial ime) then you can let the plate fully colonize, chop it up, make a LC or inoculate grains directly.
Since I've been getting deeper into it, as in having poured over 100 plates in the past months, I now understand why the idea of doing a grain jar inoculation with a spore syringe is a big no-no. Two of the syringes I ran last time I grew (a couple years ago) have done nothing but produced bacterial plates. The jars did the same thing. My aseptic technique is pretty solid, this isn't my first rodeo, and untouched plates haven't contamed, soooo....
Highly recommend getting a PC ASAP. If you can foot it, my current PC is a 24 quart Merro (T-Fal) I picked up for $80. I use a turkey fryer burner to heat it which I got for free. You can't do mycology without one, at least not easily -- I've done the ghetto style of boiling jars multiple days in a row with a cardboard box SAB. a PC of decent capacity changes everything and will pay for itself in months time.