'96 v-6 towing

i've read so many towing capability replies that i'm cross-eyed. then i started to notice that most posts concerned 2000 and above tacos. i've got a '96 v-6 4x4 sr5 with 190hp and 220lb torque. this is less than these newer models.
i am looking to get a 18'-22' ultra lite tt which when fully loaded would top the scales at 3700-4000lbs. with a tongue wt under my drawtite's 500lbs.
and under my 5000lb towing capacity, it seems, by the posts, that i would still be pushing the trucks stock engine capabilities.
seems this setup would be fine toolin' down a flat freeway. i would of course upgrade the suspension. my concern is goin' over the rockies or even some of the grades on the west coast i-5..... i don't want to be under-powered and chuggin' up the hill in 3rd gear.
my problem is do i get this kind of trailer now and find out later that i need a v-8 to satisfy my needs or do i get a bigger truck now and open up my tt options.
i love my taco.... with 500lbs in the back and driving 70-85+mph w/ the ac on i get 19-over 21mpg. i hate to give this up. it's thrifty, dependable and low maintenance!!!!
sure would like some opinions and experiences...... thx

 

Keep that Tacoma and get a tow rig. Problem solved!

 

heh heh heh...... thx MAX. don't think i haven't thought about it......

 

Our trucks aren't meant to tow more than 5000lbs GVW. Personally i wouldnt tow anything bigger than a single axle 6X12 with a 3500lb axle fully loaded.

 

The rockies are HIGH. The current V6 taco would probably be chugging up the hill in 3rd gear pulling 4000lbs at altitude. IMO, you need to either adust your expectations to be "hey I'm going faster than the big rigs" or get a tow vehicle with a 10k towing capacity & a turbo.

 

thx for the input....