Critical physical bow

Hey I'm trying something that i haven't seen anywhere on the forum. The plan for the build is to sustain lots of damage while spraying arrows with point blank. I'm still level 13 and my plan is to stick to spectral throw until about lvl 50. I'm trying to make the build without cast on crit. Maybe I cold include some elemental damage and run some auras but its not im the plan for now. Im not really sure for the possibility of such buid so please help me make it real.

http://www.pathofexile.com/passive-skill-tree/AAAAAgAB1QAbAX8Cb_KVBd74_gox-t0NhQ6QEZAK6xRsFrcX7g4VIJMlIiY_JzQgTip_K7EwwTMF-TsoWz23PnRB8kVRR1pI_EsqTVpS51TYTflWplc6WKxZ2mLnYwhnXWj5Y85xaHSHdqR4MHxKfQR-qn8FhI19QYcIif6PC5E1kjKUMZ6gn5SgoaQppWegyqluqiSliq8FtVuvqrj-vxW4pMK0xdnGjb_-yPzFhs5KyOXROdTB1XfX4dt31Kbgc-G34k3jguT56CzpGtsV8JrxtfKD23b37_CI8Vb6OuEk_SP2
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I would really appreciate some feedback. Thanks in advance!