Rental TT electric hand dolly to confirm my plans will work?

You guys read it wrong & or I wrote it wrong.

I was saying I'd hate to of hoped it would fit & then I buy a dolly & then I'm wrong & I bought both a trailer that won't fit & a dolly, that I don't need, that's why, I'd like to rent one for test fitting purposes.

Because if it just won't fit I'm not wasting the money on the trailer or dolly.

I'd just go back to the plan of a huge truck camper with slides.