Nice upgrades - you one upped me I hadn't thought about the jacks and wiring.
FWIW I finished building/burning in a Millett MiniMAX. I'd say the MiniMAX bass has a little bit more punch, but the detail on the EF3 with Tung-sol tubes is better. I kept switching back and forth on a number of recordings. Yup, the EF3 wins.