9'2" to a 8'4" longboard

Hi everyone,
I'm 6'2, 185lbs, average fitness, been surfing for 5 years and typically go out twice per week for 1-2 hours at a time. I am generally surfing in 2-3' or 3-4' waves at beach breaks in Orange County. I'll go out in a 4-6' if the conditions are right. I originally started with an 8' foamie and had trouble most likely due to weighing 250lbs, bought a 10' Becker single fin and learned to surf and then lost 70lbs and moved down to a 9'2" longboard thinner and less wide, I ride with a 2+1 setup currently. I've become pretty comfortable on the 9'2" and have been thinking about getting something a little shorter to help with maneuverability, slightly steeper drops and a little more speed. My first transition from 10 - 9'2 (10 inches) went great, I was riding the board the first time I had it in the water. This 8'4 looks like a logical next step.. it's still pretty much a long board and I won't have too terrible of a time riding it at first, it's another 10 inches transition so I'm thinking I'll have a similar experience to when I moved from 10 - 9'2. Any thoughts? I know people tend to be surfing the 10+, 9' or 7' lengths
http://orangecounty.craigslist.org/spo/5420953238.html
I'm 6'2, 185lbs, average fitness, been surfing for 5 years and typically go out twice per week for 1-2 hours at a time. I am generally surfing in 2-3' or 3-4' waves at beach breaks in Orange County. I'll go out in a 4-6' if the conditions are right. I originally started with an 8' foamie and had trouble most likely due to weighing 250lbs, bought a 10' Becker single fin and learned to surf and then lost 70lbs and moved down to a 9'2" longboard thinner and less wide, I ride with a 2+1 setup currently. I've become pretty comfortable on the 9'2" and have been thinking about getting something a little shorter to help with maneuverability, slightly steeper drops and a little more speed. My first transition from 10 - 9'2 (10 inches) went great, I was riding the board the first time I had it in the water. This 8'4 looks like a logical next step.. it's still pretty much a long board and I won't have too terrible of a time riding it at first, it's another 10 inches transition so I'm thinking I'll have a similar experience to when I moved from 10 - 9'2. Any thoughts? I know people tend to be surfing the 10+, 9' or 7' lengths
http://orangecounty.craigslist.org/spo/5420953238.html