tacomas are nasty trucks, not the most fuel efficent jap motor but that 4.0 v6 makes good power and with low gears it's all you really need unless your towing sleds or a boat or something but still it has pleanty of power for that. also pay the extra money and get the TRD model, it's got a locking rear differential which turns the vehicle from a truck to a tractor with the push of a button, not to mention bilstein HD shocks.
as far as fishtailing goes, all you have to do is get some good tires, i think BFG all terrains were mentioned? in my opinion those are the single best truck tire ever built i have gone through a few sets and they are pricey but worth their weight in gold. among being stellar preformers off road, in snow and ice, on the highway and everywhere inbetween one thing they're renound for is how long it takes to wear them out, they last forever.
whether you get yourself a set of those or not, keep your 18 gallon tank full (144 lbs.) and keep 3 or 4 five gallon buckets full of salt/sand (~200lbs.) with snap tops on them so you don't spill salty sand all over your bed and skis and end up rusting it all straped inside your bed, now that's almost 350 lbs. of weight you can use in a pinch, stuck or pulling someone out. get yourself a chain or a heavy duty tow strap that is imperitive
what does all of this mean? it means properly equipt tacoma TRDs are arguably the most capible, well suited, winter going trucks on the market.
(most of these features are availible on other midsize trucks too, nissan makes the frontier with a similar setup [nismo model]. i have an 02 s10 ZR-2 and it's got a locker in the rear, bilsteins, BFG all terrains, bigger motor too, but i pay for it at the pump with 18 mpg... honestly i'm not sure how much better your milage will be in the tacoma they are not really known for being fuel sippers, namely the v6's)