I may be going against the grain here but "do you really NEED all that space?"
as you said you will be solo most of the time.
I went the other way and downsized; I travel 90% solo and am away for several
weeks at the time. I needed a TH as I take an dirt bike and bicycle with me but
I did not want to drag 30ft of trailer through the back-roads of the USA.
I bought a KZ 18TH (which may be too small for you razr) and find that it is
a perfect balance of weight/size/comfort/handling....... It has worked perfectly
getting into tight spaces in State Campgrounds.
The garage is my living area when empty and does not smell of gas/oil.
Works really well for me.
Just a thought.