Yours truly (for scale) and Brian's 17.5" F4.5 telescope.

A friend of mine stopped by and I had a photo shot of the 17.5" F4.5 and yours-truly for scale. As mentioned, this is a large telescope. Yet, I'm able to move the sub-assemblies (rocker box, UTA, mirror box) around quite easily. Setup take less than 5 minutes and collimation stays very close. Only the slightest adjustment is necessary.