Hi Lister
A couple of things that I found:
There is not much room in the front for people with a larger tummy - and if you pax has one it can seriously stop you from having a fully flared landing - you just can't get the stick right back - and that last inch of rear stick movement is critical ! - in the cub it can mean a bouncy landing and a go around rather than a nice touch down at minimum speed.
The instruments can be totally obscured by a large pax and that means if you are interested in them (I never really was as I had a Garmin 196 in the back) it can be a problem.
You can fly solo from the front if you stick a counterweight in the back (I never did but saw a guy who filled a milk churn with concrete and used to strap it in the rear seat like a person through the handles on the sides) and fly from the front (not your syndicate I hasten to add). The real issue is that 'real' supercubs have fuel in the wings not the front tank like the L4 and this alters the CG and loading hence avoiding the fudging issue.
The L4 originally had only 1 seat as designed, and had a space in front to take the plotting board for artillery shoots - it only had a second seat as an afterthought - which is why the space is so tight - I think the phrase with regards to the second seat was 'fitted for, but not equipped with' as a rule.
But do fly from the front, it is good experience to be conversant with both seats - I was happy to fly from either seat as required. I'm sure someone in the syndicate would give you a couple of flights to be fully comfortable with both seats
Finally, I have never been really comfortable with sitting 2 feet behind 12 gallons of fuel and a hot exhaust so I am happier flying in the back seat ! (just in case)
I am assuming your first pax will be stiknrudda ? - that being the case you've no problems at all.
cheers and enjoy
Arc