Druid Talent Builds --- HelpFollow

I have a lvl 28 Druid, and I had spent my talent pts in feral and balance until lvl 26 when I re-speced and went full balance. I', enjoying balance, but I miss being able to tank and dps in feral. I've seen hybrid builds with points in all 3 trees (I think 30 in balance, and about 15 in the other 2) that I am thinking about doing. But when I get to endgame, is having my talent points spread across 3 trees going to put me at a disadvantage? Is it a better idea to have all my talent pts in two one or two trees? And if I decide to split them among different trees, should I go all the way in one tree before I brance out to another, or spread the pts evenly between the trees as I lvl? (ie, alternating one pt into balance, one pt into resto vs. putting all my pts in balance until i get moonkin op dreamstate, then putting all my points from there into balance)

Thanks