Which longboard for me?...

Whilst this may be a common question, my situation is anything but... Surfing for 30 years (from the age of 7), quite accomplished, normally update my board each year. January of this year I suffered a neck injury which has left me with lack of strength and stamina in my left upper body... After plenty of rehab, I was hoping to be back in the water, but after a few attempts I've accepted that paddling a short board is simply beyond me, so I'm moving up to something bigger. I have a 9'9 Longboard that I shaped myself that was just for a bit of fun when the swell was down, but it won't cut it as a first choice board. Looking for something loose, not too chunky that I can throw around, and would love to get up and ride the nose. Suggestions?