Kelly, I think that your perception around the size and weight of the 410 series is accurate...while you might be able to have it mobile, it's not going to be the best idea for sure. There's substantially more machine there. So IMHO, if you can place it in your shop in a position that supports infeed/outfeed well and leave it, that should be your preferred plan. If you give it some careful thought, you should be able to come up with a plan and that usually also means putting it at an angle in the shop to maximize the ability for the slider wagon to go end to end.
As to pre-owned, the market still seems to be pretty good and a clean, well maintained combo should not be a big issue to sell. I believe a 'Creeker recently sold one in the classifieds here (you'll need to be a Contributor to do that...click the Donate button up top. It's only six bux minimum to gain the benefits of the Classifieds, image viewing and private messaging) You'll also want to advertise it in the SCM/Minimax online group, too.
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The most expensive tool is the one you buy "cheaply" and often...