Help! Is this a suitable makeshift enclosure?

[CaramelBeet]

Long story short: Picked my one-month-old beardie up today, but his tank wouldn't fit in the car, so now I've got a beardie and no tank (It's getting delivered my a relative on Tuesday, two days away). I've made a makeshift enclosure. It's a sort of plastic somewhat opaque tub, with newspaper on the bottom, a piece of wood on one side, a tshirt of mine on the other, a very small dish of water, and a thermometer (a big, bulky outside one; not ideal, but it's all I have :/). I've got it by the window so he sort of gets some natural light. It's pretty warm here atm (about 25C, probably), but I've put my electric blanket so that it goes under one-half of the tank and around a short and long side; the only way I could think to heat it (It's not on at the moment, because it's pretty warm, but I can turn it on when it cools down). I've put the lid on top for now; I don't think it's big enough for him to climb out, but I'd never forgive myself if he did.
I haven't fed him yet; thought I'd let him chill for a bit (it was a 2 1/2 hour car drive), and in a little while I'll put out some salady stuff and see if he wants any crickets.
Here are some pictures (with my hand in one for comparison):

Advice? Tips? (I'm really freaking out about this, if you couldn't tell)
What temperature should I try to keep the tank, keeping in mind that I can't really have much of a gradient?
Thank you all so much

 

[Gormagon]

When they are shipped, they have less than you have now so, I'd say it will be OK until you get your viv home. It would be nice to have some sort of heat from above for basking to help with digestion if it eats anything.

 

[CaramelBeet]

Yeah, I just don't have any heat lights or anything :/ and it's a Sunday and tomorrow's a public holiday in Australia, so I can't really buy anything.

 

[Zuzu]

I'd wait until it's nice and sunny to feed him, and either set him by a window or outside so he can bask and digest. Of course, if you take him outside I'd stick around to keep an eye on him. I don't think he can climb out, but just to be safe!

 

[CaramelBeet]

Hmm, just it means he won't get to eat till tomorrow (it's about 5pm here right now, but it's become really cloudy)
Would I be better off offering some salady stuff tonight (finely cut carrot, zucchini, and a bit of soaked cat food) and leaving crickets till he can bask?