Les.
The trailer is going to be around 4,400 lbs. when loaded with water, propane and etc. Tongue weight should be 10 to 15 percent of the gross trailer weight, at 12.5 percent that would be 550 lb. tongue weight. I don't know what model Tacoma you have but if the tow rating is 6,500 lbs. with a good WD hitch you should be ok. As jack said check the axle ratings but they should be ok. I tow a 2209T with a 4.0 Ford Explorer, trailer weights over 4,000 when loaded and my tow rating is only 4,550, due to the 3.55 axle ratio, this is far from ideal but it does work, but I have a transmission temperature gauge, the temperature goes very high when the auto torque converter is unlocked, even tho it is an auto transmission, I manually control the 5,4 3 down shifts to keep the torque converter locked as much as possible to keep trans oil temp down. Starting on steep hills and long hills causes trans temp oil to go very high, actually to high. The Explorer has 2 stock trans oil coolers. It was fine with the 95T which was almost 500 lbs lighter. GVWR is important but you also need to know the tow rating of your Tacoma?
I want to add that I would not recommend that anyone go as close to their max tow rating as I am, if you do you are inviting trans failure or other problems.