Emulators will have input lag, but they run. If you're super desperate, you could try running it on a NAOMI emu and doing Japanese Arcade-style training mode (no clue if NAOMI emus lag as well).
Once +R comes out though you'd better either camp out at someone's house or buy a PS3 (they're like $200 used now). Old used 360s are $120 but RROD is a huge risk.