Brendan, with your 6SE, it might be an option to look at a simple alt-az mount for your 6" SCT, something without the goto. It gives you a set up that takes just 2min to put up and take down. If you do get yourself a small refractor, you'll have an alt-az mount that can accommodate both scopes with no payload issues.
Just a thought on how to better exploit the gear you already have
Alex.