Ranger Multishot Build

hi guys,

because i have no experience whatsoever with a ranger on highlevel, i have to post my idea of a skilltree, before i play it in nemesis. i like to get some tips and suggestions if this might work out or not.

passive tree:

http://www.pathofexile.com/passive-skill-tree/AAAAAgIAr-ubjQgu7YMZjgBe037veu4OVvr8xd0NW69OKimlI_bv8FpIGtv5Y73mFfA6WAR-hxnnVCT91QC2QVoaapMZtPqx6mLexs2YvqcF-ZcGxKKjipsm6Nbe9ud0D6vwQpXpX-Fh4jY9pcuIa-OEDkidqmKs1p0Rln_GJ6labSQ8p1xJUbb3ES8c3PF2kye0DFv0RnGDCTIBshnPemegh3ZKfasLcsPMBg==

the idea is getting life nodes. some damage nodes, frenzy, conduit (for later lvling in parties, docks etc.) - dont know if this is needed though. and overall ive gotten some good points out of the ranger tree.

what i lack is:

-accuracy
-crit chance and multiplier.

so my question is: how much accuracy points might i need later on? should i go on crit chance and multiplier to really boost my damager or is no-crit-play also valuable?

i play on nemesis.

the last question i got is, which skillgems should i use with multishot? right now i have got MS+Fork+Pierce+faster projectiles.
also how do i solve my manaproblems?

u think it is solved by getting the int nodes down to conduit?

if i get some crit and accuracy i would go for sth like this:

http://www.pathofexile.com/passive-skill-tree/AAAAAgIAr-ubjQgu7YMZjgBe037veu4OVvr8xd0NW69OKimlI_bv8FpIGtv5Y73mFfA6WAR-hxnnVCT91QC2QVoaapMZtPqx6mLexs2YvqcF-ZcGxKKjipsm6Nbe9ud0D6vwQpXpX-Fh4jY9pcuIa-OEDkidqmKs1p0Rln_GJ6labSQ8p1xJUbb3ES8c3PF2kye0DFv0RnGDCTIBshnPemegh3ZKfasLcsPMBp2j_KvQORfYXvqP-kk7Nnu0o2sk2mTKjw==

thx for taking the time in advance!

greetings!