I have a talent for getting straight to point. Unless you can start your bike in 3rd or 4th gear(1-7), forget about it. You are definitely going to stop in one of those gears for sure. Otherwise, I would not even attempt it.
Additionally, Yesterday was my first foray into a busy bike trail so I guess that makes me the only "amateur- expert" here. LOL
I did have one incident where I stopped on the trial in 4th gear to chat for a second. On level ground in 4th gear I could not start again until I had pushed myself to a gentle down slope. My remark to a passerby, as I was trying to start the bike up, was, "I did not know this bike required and airfield to take off from". Then miraculously I took off.
Other details for your discernment are as follows; Your Sofrider will obviously out perform my Avalon conversion version. Also I'm 65 years old and I weight 244 lbs. I've been at it for 2 weeks now. Success has a lot to do with where you set your goals. I count it a great success that no one had to dive into the lake to get out of my way yesterday. However, I was close enough to the lake that had I lost control the obvious escape maneuver would have been to aim for the lake thus minimizing any scrapes or bruising.
Regards
Bob
PS somebody please find me a set of those $2/7 Rohloff gears. I gotta get those babies.