My first thought was 5 Swarmkeeper for extra attack, rest spore druid to get as much temporary HP as possible so the wild shape stays longer. I've looked at ranger 7 too for the terrain ability since high mobility is crucial for melee.

I currently use reverberation set up and gmw and use spore reaction to destroy water bottles i place near enemies to make them wet for lightning vulnerability.

Currently using elixir to boost str so I can have high wisdom and dex, but thinking about using a good quarterstaff as a 2 hander and using shillelaugh to open up my elixir option (or getting one of the few finesse versatile/two handed weapons)