I don't know if there are still signing bonuses or not, or if there will be for one in 4-5 years(when you plan on CT/OT'ing).
How about you focus on what is currently ahead of you, like Army Reserve BMQ, etc. You aren't planning on going Regs for a few years, lots can change.
Also, you may want to change your avatar so it properly reflects your current rank as you are not yet a Pte(T)