Last night, with the help and cheers of a few of my NH mates, I was able to accomplish both TTII and TTIII, back to back, with 5 minutes to spare and 6 of the 9 orders still checked!
I hadn't been that interested in doing TT, for some reason, so left it alone and never bothered. However, over the past week, I started feeling like I wanted to complete these achievements, so I finally decided to do it.
I was toward the end of level 59 when I began prepping 2-3 days before the run, working on getting at least 10 of every machine item (with the help of Tom) and stacking some things, as well. Then as I was getting close to seeing light at the end of the prepping tunnel, I leveled up to 60 and now had to add jellybeans and olive oil to my prepping. Even though I upgraded my barn once, opened up one plot of land, and sold all my ore and most of my axes and saws during my prepping, my barn was bursting at the seams, especially since I held on to all my EMs, and I finally decided to do the run last night.
I did buy a few things from the neighbors helping me, but if I had gone on to other orders and just kept going, I may have been able to make it without doing so, but you just never know what new orders will come up and whether they will definitely have a check mark already. I had 2 jewelry orders and one bar order and had what I needed for those. I even cut down and replanted 2 apple trees during this time...LOL!
I used the first 2 posts in this thread http://forum.supercell.net/showthrea...=turbo+trucker to help me prep and even though I was unable to follow it to a T, it helped tremendously!
Moral of this story? Even if you are at a higher level, you can still do TTII and TTIII, and with enough prepping, you can do them back to back! It also helps when you have ex-formula race car driver Hilda at the wheel of the truck! :D

