Use the SLIME provided with Quicklisp
(ql:quickload "quicklisp-slime-helper")
To get updated software, use:
(ql:update-all-dists)
To update the Quicklisp client, use:
(ql:update-client)
Put
(:tree "~/Dropbox/code/lisp/")
in your ~/.config/common-lisp/source-registry.conf.d/my-asdf.conf
This means that any and all lisp projects in your lisp directory are now ql:quickload able.